Cloud Virtual Machine

Cloud Virtual Machine
Product Introduction
Product Documentation©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Copyright Notice©2013-2024 Tencent Cloud. All rights reserved.
Copyright in this document is exclusively owned by Tencent Cloud. You must not reproduce, modify, copy or distributein any way, in whole or in part, the contents of this document without Tencent Cloud's the prior written consent.
Trademark Notice

All trademarks associated with Tencent Cloud and its services are owned by Tencent Cloud Computing (Beijing)
Company Limited and its affiliated companies. Trademarks of third parties referred to in this document are owned bytheir respective proprietors.
Service Statement
This document is intended to provide users with general information about Tencent Cloud's products and services
only and does not form part of Tencent Cloud's terms and conditions. Tencent Cloud's products or services are
subject to change. Specific products and services and the standards applicable to them are exclusively provided for in
Tencent Cloud's applicable terms and conditions.

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Contents
Product Introduction
CVM Overview
Advantages
Regions and Availability Zones
Instance
Instance Overview
Families and Models
Life Cycle
Spot Instance
Storage
Storage Overview
Cloud Block Storage
Local Storage
Cloud Object Storage (COS)
Image
Overview
Image Types
Public Image
Official Maintenance End Plans of Operating Systems
TencentOS Server
TencentOS Server Introduction
TencentOS Server Image Update Log
TencentOS Server Features
FAQs about TencentOS Server
OpenCloudOS
OpenCloudOS Overview
OpenCloudOS V8 Image Update Log
OpenCloudOS V9 Image Update Log
SnapshotNetwork and Security
Overview
Placement Group
Network Environment
Private Network AccessInternet Access©2013-2022 Tencent Cloud. All rights reserved.

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Elastic IP (EIP)
Elastic Network Interface (ENI)
Login Password
SSH Keys
Cloud Workload Protection Platform
Anti-DDoS Basic
OPS and Monitoring
Health Check
Monitoring & Alarming
Access Management
Access Control Overview
Authorizable Resource Type
Authorization Policy Syntax
APIs Supporting CAM©2013-2022 Tencent Cloud. All rights reserved.

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Product Introduction
CVM Overview：

Last updated 2024-01-08 09:12:28

CVM Overview
Tencent Cloud Virtual Machine (CVM) is a scalable cloud computing service that frees you from estimation of
resource usage and upfront investment. With Tencent Cloud CVM, you can start CVMs and deploy applications
immediately.
You can customize all resources of a CVM instance, including CPU, memory, disk, network, and security policies. You
can also easily adjust the resources in response to any change in demand.

Using CVM instances
You can configure and manage CVM instances in the following ways:
Console: a web-based UI for configuring and managing CVM instances.
API: Tencent Cloud also provides APIs for configuring and managing CVM instances. For more information, see API
Category.
SDK: you can use SDK or Tencent Cloud CLI to call CVM APIs.

Key Concepts
Before using Tencent Cloud CVM, you should familiarize yourself with the following concepts:
Concept

Instance

Description
A virtual computing resource containing basic computing components such as CPU,
memory, OS, network, and disks. Tencent Cloud provides various configurations of CPU,
MEM, storage, and networking capacity for CVM instances. For more information, please see
Instance Types.

Image

A pre-configured template containing an operating system and applications that CVM
instances run on. Tencent Cloud CVM provides pre-configured images for Windows, Linux,
etc.

Cloud Block
Storage

A distributed and persistent block storage device provided by Tencent Cloud that can serveas the system disk or an expandable data disk of an instance.

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Virtual Private

A logically isolated virtual network space in Tencent Cloud.

Cloud

IP address

Tencent Cloud provides Private IP and Public IP addresses. Private IP addresses are for theinterconnection of CVM instances within the same LAN, while public IP addresses are forpublic-facing services.

Elastic IP

Static public network IP addresses designed especially for dynamic networks to meet thedemands for fast troubleshooting.

Security group

A virtual firewall that features stateful data packet filtering. It is used to configure the network
access control of CVMs. Security groups are an important measure for network security andisolation.

Purchasing and Customizing CVM Instances
If you have specific needs that our standard CVM specifications cannot meet, use the following guides to learn how to
obtain custom configurations:Customizing Windows CVM Configurations
Customizing Linux CVM Configurations

CVM Prices
CVM supports pay-as-you-go. For more information, see Price of CVM Instance.
For pricing information on CVM instances and other resources, refer to Product Pricing.

Relevant Products
Auto Scaling lets you scale server clusters using pre-defined criteria such as time or load. For more information, referto the Auto Scaling documentation.
Cloud Load Balancer allows you to automatically distribute client traffic among multiple CVM instances. For more
information, refer to the Cloud Load Balancer documentation.
Tencent Kubernetes Engine allows you to manage the lifecycle of applications in a CVM. For more information, refer tothe Tencent Kubernetes Engine documentation.
Cloud Monitor keeps track of your CVM instances and their system disks. For more information, refer to the Basic
Cloud Monitor documentation.
You can deploy a relational database on the cloud or use TencentDB. For more information, refer to the TencentDB for
MySQL documentation.

©2013-2022 Tencent Cloud. All rights reserved.

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Advantages：

Last updated 2024-01-08 09:12:28

Comprehensive Service Offerings
Tencent Cloud CVM offers a wide range of options for your data storage needs.
Region and availability zones across the globe: Tencent Cloud offers nodes in South China, East China, North
China, and Southwest China in Mainland China. Overseas coverage includes Southeast Asia, Asia Pacific, North
America, Western U.S., and Europe. Deploy applications in regions close to the location of your clients reduces
latency.
Model Specifications
Standard: suitable for small and medium-sized web applications and databases.
MEM optimized: suitable for applications that require memory-intensive operations such as searches and computing.
High IO: suitable for low latency, I/O-intensive applications.
Computing: suitable for large game servers, advertisement service engines, high performance computing, and othercompute-intensive applications.
Big data: suitable for throughput-intensive applications such as Hadoop distributed computing, massive log
processing, distributed file systems, and large data warehouses.
Heterogeneous: suitable for high-performance applications such as deep learning, scientific computing, video
encoding/decoding, and graphics workstations.
Batch-based: suitable for compute-intensive applications that use super large computing nodes frequently in a shorttime, such as rendering, gene analysis, and crystal pharmacy.

Flexible Configuration
We are committed to building the most flexible cloud service management platform in the industry with the following
capabilities:
Hardware: instant upgrading/downgrading of hardware specifications for CVMs based on CBS.
Storage: instant storage expansion for CVMs based on CBS.
Bandwidth: instant upgrading/downgrading of bandwidth for CVMs.
OS: switch between Windows and Linux at any time for CVMs in Mainland China. Coming soon for other areas.
EIP: for CVMs in various network environments.
Image: public images (with multiple Linux and Windows variants) and custom images (image created by users using
the image creation feature). Cross-region adjustment and image duplication are supported.

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Custom network architecture: Virtual Private Cloud (VPC) provides independent network space, custom IP
address ranges, IP addresses, and routing policies. It offers port-level access control to support full logical isolation for
networks.

Reliability
We are committed to building the most reliable cloud service in the industry.
CVM reliability: we guarantee 99.95% service availability for CVMs with data reliability ranging from 99.99% to99.999999%. Features including imperceptible migration, data snapshots, and automatic alerts are supported toensure the security of your servers.
Cloud disk policy: multiple copies of user data eliminates single point of failure and ensure data reliability. You canrest assured when moving your data to Tencent Cloud and do not have to worry about data loss.
Stable network architecture: our sophisticated network virtualization technology and ENI binding technology deliver
high network availability. Operations in T3+ IDCs ensure the reliability of the operating environment and frees you fromhaving to worry about network availability.

Fast
We are committed to providing fast and convenient services for both user operations and CVM performance.
Convenient and rapid operations: deploy one, hundreds, or even thousands of server instances in minutes, andpurchase, configure, manage, or expand your services with just one click.
Top-speed public network: our BGP public network with more than 20 lines covers almost all ISPs. No matter
which ISP your customers are using, they can always enjoy the same top-speed bandwidth and failover in seconds.
Top-speed private network: the private networks of Tencent Cloud's data centers in the same region areinterconnected, all with megabyte or gigabyte connections, ensuring high communication quality within private
networks.

Security
Tencent Cloud provides multiple solutions to ensure the security of CVMs. In addition, the backup and rollback
mechanisms can protect data security.
Various methods for remote login to the CVM: Various login methods are provided, including login with
key/password or VNC login.
Diverse security services: DDoS protection, DNS hijacking detection, intrusion detection, vulnerability scanning,
web trojan detection, login protection, and other security services are provided to safeguard your server.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual MachineFree cloud monitoring: multiple types of real-time alerts are supported.
Custom access control: customize CVM and network access policies through security groups and network ACL,
which serve as firewalls for different scenarios.
Tencent Cloud security highlights:
Comprehensive security protection
Comprehensive security services are provided for CVMs, including security inspections (vulnerability scanning, trojan
detection, backdoor detection, port inspection, etc.) and security protection (DDoS protection, intrusion detection,access control) to ensure data security and user privacy.
Real-time alerts and scheduled analysis
24/7 security services so we can identify vulnerabilities and notify you in real time.
Free and easily accessible security protection
You do not need to buy expensive security devices for your data anymore. Our cloud security service comes free withyour CVM. On top of that, one-click activation without deployment makes it easy to use.
Professional team, reliable service
The team responsible for Tencent Cloud security has years of experience in providing professional and trustworthy
security services to users.

Ease of use
A wide range of officially verified application software and operation and maintenance tools make operation andmaintenance more convenient, so that you no longer have to worry about choosing the right tools.
Tencent Cloud CVM provides a web-based user interface, the Console, that allows you to perform operations such assystem boot, configuration, and OS reinstallation on CVM instances just like on physical machines. If you have signed
up for a Tencent Cloud account, you can log in to the CVM console to operate on your CVM.
Tencent Cloud CVM also offers plenty of APIs which you can utilize to implement the automated operation andmaintenance system that tightly integrates with your existing O&M structure and provides the ideal solution for yourservice needs. These APIs use HTTP/HTTPS requests. For more information about CVM API operations, refer to our
API Documentation.

Cost-effective
Tencent Cloud lets you save on IT investment, simplify O&M operations.
You only pay for what you need. No up-front investment, no infrastructure, no preparation. Tencent Cloud is theperfect cloud platform for you.

©2013-2022 Tencent Cloud. All rights reserved.

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Regions and Availability Zones：

Last updated 2024-03-22 16:16:46

Regions
Introduction
A region is the physical location of an IDC. In Tencent Cloud, regions are fully isolated from each other, ensuringcross-region stability and fault tolerance. When purchasing Tencent Cloud services, we recommend selecting theregion closest to your end users to minimize access latency and improve download speed.
You can view the following table or use the DescribeRegions API to get a complete list of regions.

Characteristics
The networks of different regions are fully isolated. Tencent Cloud services in different regions cannot communicate
via a private network by default.
Tencent Cloud services across regions can communicate with each other through public IPs as instructed in Internet
Access, while those in different VPCs can communicate with each other through Cloud Connect Network that is fasterand steadier.
Cloud Load Balancer (CLB) currently supports intra-region traffic forwarding by default. If you enable the cross-region
binding feature, a CLB instance can be bound to CVM instances in another region.

Availability Zones
Introduction
An availability zone (AZ) is a physical IDC of Tencent Cloud with independent power supply and network in the same
region. It can ensure business stability, as failures (except for major disasters or power failures) in one AZ are isolated
without affecting other AZs in the same region. By starting an instance in an independent AZ, users can protect theirapplications from being affected by a single point of failure.
You can view the following table or use the DescribeZones API to get a complete list of availability zones.

Characteristics
Tencent Cloud products that are in the same region, different availability zones, and the same VPC are interconnected
through the private network. They can be accessed directly through private IP addresses.
Note:
Private network interconnection refers to the interconnection of resources under the same account. Resources under
different accounts are completely isolated on the private network.

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Mainland China
RegionAZ
Guangzhou Zone 1 (sold out)
ap-guangzhou-1
Guangzhou Zone 2 (sold out)
ap-guangzhou-2
Guangzhou Zone 3 (sold out)

South China(Guangzhou)
ap-guangzhou

ap-guangzhou-3
Guangzhou Zone 4(sold out)
ap-guangzhou-4
Guangzhou Zone 6
ap-guangzhou-6
Guangzhou Zone 7
ap-guangzhou-7
Shanghai Zone 1 (sold out)
ap-shanghai-1
Shanghai Zone 2
ap-shanghai-2
Shanghai Zone 3(sold out)

East China

ap-shanghai-3(Shanghai)
ap-shanghai

Shanghai Zone 4(sold out)
ap-shanghai-4
Shanghai Zone 5
ap-shanghai-5
Shanghai Zone 8
ap-shanghai-8

East China (Nanjing)

Nanjing Zone 1

ap-nanjing

ap-nanjing-1
Nanjing Zone 2(sold out)
ap-nanjing-2
Nanjing Zone 3©2013-2022 Tencent Cloud. All rights reserved.

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ap-nanjing-3
Beijing Zone 1 (sold out)
ap-beijing-1
Beijing Zone 2(sold out)
ap-beijing-2
Beijing Zone 3
ap-beijing-3
North China (Beijing)
ap-beijing

Beijing Zone 4(sold out)
ap-beijing-4
Beijing Zone 5(sold out)
ap-beijing-5
Beijing Zone 6
ap-beijing-6
Beijing Zone 7
ap-beijing-7

Southwest China(Chengdu)
ap-chengdu

Southwest China(Chongqing)
ap-chongqing

Chengdu Zone 1
ap-chengdu-1
Chengdu Zone 2(sold out)
ap-chengdu-2
Chongqing Zone 1
ap-chongqing-1
Hong Kong Zone 1 (Nodes in Hong Kong, China can cover Hong Kong/Macao/Taiwan
regions)
ap-hongkong-1

HongKong/Macao/Taiwan(Hong Kong, China)
ap-hongkong

Hong Kong Zone 2 (Nodes in Hong Kong, China can cover services in Hong
Kong/Macao/Taiwan regions)
ap-hongkong-2
Hong Kong Zone 3 (Nodes in Hong Kong, China can cover Hong Kong/Macao/Taiwan
regions)
ap-hongkong-3

Note:©2013-2022 Tencent Cloud. All rights reserved.

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The product is in beta test for Jinan, Hangzhou, Fuzhou, Wuhan, Changsha, and Shijiazhuang regions. To try it out,
contact the sales rep for application.

Other countries and regions
RegionAZSingapore Zone 1 (Nodes in Singapore can cover Southeast Asia)
ap-singapore-1

Southeast Asia
(Singapore)
ap-singapore

Singapore Zone 2 (Nodes in Singapore can cover Southeast Asia)
ap-singapore-2
Singapore Zone 3 (Nodes in Singapore can cover Southeast Asia)
ap-singapore-3
Singapore Zone 4 (Nodes in Singapore can cover Southeast Asia)
ap-singapore-4
Jakarta Zone 1 (Nodes in Jakarta can cover Southeast Asia)

Southeast Asia
(Jakarta)
ap-jakarta

Northeast Asia
(Seoul)ap-seoul

Northeast Asia
(Tokyo)ap-tokyoap-jakarta-1
Jakarta Zone 2 (Nodes in Jakarta can cover Southeast Asia)
ap-jakarta-2
Seoul Zone 1 (Nodes in Seoul can cover Northeast Asia)
ap-seoul-1
Seoul Zone 2 (Nodes in Seoul can cover Northeast Asia)
ap-seoul-2
Tokyo Zone 1 (Nodes in Tokyo can cover Northeast Asia)
ap-tokyo-1
Tokyo Zone 2 (Tokyo nodes can cover services in Northeast Asia)
ap-tokyo-2
Mumbai Zone 1 (Nodes in Mumbai can cover South Asia)

South Asia (Mumbai)
ap-mumbaiSoutheast Asia
(Bangkok)ap-mumbai-1
Mumbai Zone 2 (Nodes in Mumbai can cover South Asia)
ap-mumbai-2
Bangkok Zone 1 (Nodes in Bangkok can cover Southeast Asia)
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ap-bangkok

North America(Toronto)
na-toronto
South America (SãoPaulo)
sa-saopauloWest US (Silicon
Valley)na-siliconvalley

East US (Virginia)
na-ashburn

Bangkok Zone 2 (Nodes in Bangkok can cover Southeast Asia)
ap-bangkok-2
Toronto Zone 1 (Nodes in Toronto can cover North America)
na-toronto-1(sold out)

Sao Paulo Zone 1 (Sao Paulo nodes cover services in South America)
sa-saopaulo-1
Silicon Valley Zone 1 (Nodes in Silicon Valley can cover Western US)
na-siliconvalley-1
Silicon Valley Zone 2 (Nodes in Silicon Valley can cover Western US)
na-siliconvalley-2
Virginia Zone 1 (Nodes in Virginia can cover Eastern US)
na-ashburn-1
Virginia Zone 2 (Nodes in Virginia can cover Eastern US)
na-ashburn-2
Frankfurt Zone 1 (Nodes in Frankfurt can cover Europe)

Europe (Frankfurt)
eu-frankfurt

eu-frankfurt-1
Frankfurt Zone 2 (Nodes in Frankfurt can cover Europe)
eu-frankfurt-2

Regions and AZ Selection
When selecting a region and AZ, take the following into consideration:
Your location, the location of your users, and the region of the CVM instances.
We recommend that you choose the region closest to your end users when purchasing CVM instances to minimize
access latency and improve access speed.
Other Tencent Cloud services you use.
When you select other Tencent Cloud services, we recommend that you try to locate them all in the same region and
AZ to allow them to communicate with each other through the private network, reducing access latency and increasing
access speed.
High availability and disaster recovery.
Even if you have just one VPC, we still recommend that you deploy your businesses in different availability zones toprevent a single point of failure and enable cross-AZ disaster recovery.

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There may be network latency among different AZs. We recommend you assess your business requirements and findthe optimal balance between high availability and low latency.
If you need access to CVM instances in other countries or regions, we recommend you select a CVM in those othercountries or regions. If you use a CVM instance in China to access servers in other countries and regions, you may
encounter much higher network latency.

Resource Availability
The following table describes which Tencent Cloud resources are global, which are regional, and which are specific toavailability zones.
Resource ID Format
Resource

User Account-8-Digit String of
Numbers and Letters

No limitType

Globally unique

Description

Users can use the sameaccount to access
Tencent Cloud resources
around the world.
Users can use an SSH

SSH Keys﻿

CVM Instances﻿skey-xxxxxxxx

Globalins-xxxxxxxx

Instances are AZspecific.

key to bind a CVM in any
region under the account.
Users can only create a
CVM instance in a
specific AZ.
Custom images created

Custom Images﻿

Elastic IPs﻿

img-xxxxxxxx

eip-xxxxxxxx

Available in multiple
availability zones of aregionAvailable in multiple
availability zones of aregionSecurity Group﻿sg-xxxxxxxx©2013-2022 Tencent Cloud. All rights reserved.

Available in multiple
availability zones of afor the instance areavailable to all availability
zones of the same region.
Use Copy Image to copy
a custom image if you
need to use it in otherregions.
EIPs are region-specificand can only be
associated with instancesin the same region.
Security groups can only
be associated with

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Cloud Virtual Machineregioninstances in the same
region. Tencent Cloud
automatically creates
three default security
groups for users.
Users can only create a

Cloud Block Storage﻿

disk-xxxxxxxx

Instances are AZspecific.

Cloud Block Storage disk
in a specific AZ andattach it to instances inthe same availability
zone.

Snapshots﻿

snap-xxxxxxxx

Available in multiple
availability zones of aregionA snapshot created froma cloud disk can be used
for other purposes (suchas creating cloud disks)
in this region.

Cloud Load Balancer﻿

clb-xxxxxxxx

Available in multiple
availability zones of aregionCloud Load Balancer can
be bound with CVMs indifferent availability zones
of a single region for
traffic forwarding.

Available in multiple
VPC﻿

Subnets﻿

Route Tables﻿

vpc-xxxxxxxx

subnet-xxxxxxxx

rtb-xxxxxxxx

availability zones of aregionInstances are AZspecific.

Available in multiple
availability zones of aregionA VPC in one region canhave resources created indifferent availability zonesof the region.
Users cannot create
subnets acrossavailability zones.
When creating a routetable, users need to
specify a VPC. Therefore,
route tables are regional
as well.

Relevant Operations
Migrating an instance to another availability zone

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Once launched, an instance cannot be migrated to another availability zone. However, you can create a custom imageof the CVM instance and use the image to launch or update an instance in a different availability zone.
1. Create a custom image for the current instance. For more information, see Create Custom Images.
2. If the instance is on a VPC network environment and you want to retain its current private IP address after the
migration, first delete the subnet in the current availability zone and then create a subnet in the new availability zone
with the same IP address range. Note that a subnet can be deleted only when it contains no available instances.
Therefore, all the instances in the current subnet should be migrated to the new subnet.
3. Create a new instance in the new availability zone by using the custom image you have just created. You canchoose the same type and configuration as the original instance, or choose new settings. For more information, see
Creating Instances via CVM Purchase Page.
4. If an elastic IP is associated with the original instance, you need to dissociate it from the old instance and associate
it with the new instance. For more information, see Elastic IP.
5. (Optional) If the original instance is pay-as-you-go, then you can choose to terminate the original instance. For more
information, see Terminate Instances.

Copying images to other regions
Operations such as launching and viewing instances are region-specific. If the image of the instance that you need tolaunch does not exist in the region, the image needs to be copied to the desired region. For more information, see
Copying Images.

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Instance
Instance Overview：

Last updated 2024-01-08 09:12:28

Overview of a CVM InstanceAn instance is a Cloud Virtual Machine (CVM). It contains basic computing components such as the CPU, thememory, the operating system, the network, and the disk.
CVM instances provide elastic computing services in the cloud in a secure and reliable way to meet computing
requirements. As business demands change, computing resources can be scaled in real time to lower your softwareand hardware costs and simplify IT OPS work.
Each instance type offers different computing and storage capabilities, making them suitable for different use cases.
You can choose the computing capacity, storage, and network access method of the instance based on the scope ofthe service you need to provide. For more information about instance types and use cases, see Instance Types. Afteryou launch an instance, you can use it as you would any traditional computer. You will also have complete control overyour instances.

Instance ImageAn Image is a template that contains software configurations (operating systems, pre-installed programs, etc.)
required for launching CVM instances. You can use an image to launch an instance or multiple instances repeatedly.
In other words, an image is the “installed disk” of the CVM.
Tencent Cloud provides the following types of images:
Public image: available to all users and suitable for major operating systems.
Custom image: only available to the creator and the users with whom the image is shared. A custom image is createdfrom running instances or imported from external sources.
Shared image: shared by other users. They can only be used to create instances.
For more information about images, see Overview or Image Types Overview.

Instance Storage
Similar to a normal CVM, instances can be stored in the system disk and the data disk:
System disk: similar to the C drive in the Windows system. The system disk contains a full copy of the image used tolaunch an instance and the running environment for the instance. A system disk larger than the used image is required©2013-2022 Tencent Cloud. All rights reserved.

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when an instance is launched.
Data disk: similar to the D and E drives in the Windows system. The data disk saves user data and supports flexible
expansion, mounting, and unmounting.
Both the system disk and the data disk support different types of storage provided by Tencent Cloud. For more
information, please see Storage Overview.

Instance Security
Tencent Cloud provides the following instance security protection methods:
Policy: when different accounts need to control the same set of cloud resources, you can use a policy to control theiraccess to cloud resources.
Security groups: you can use a security group to control the access of trusted addresses to instances.
Login control: log in to your Linux instances using SSH keys as much as possible. If you log in to your Linux instances
using login passwords, change your passwords periodically.

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Families and Models：

Last updated 2024-07-04 09:49:10
When creating a Tencent Cloud CVM, the instance type you specify determines the instance's host hardware
configuration. Each instance type provides different computing, memory and storage features. You can choose theinstance type that suits your application scale. Tencent Cloud provides a range of instance families with varying
combinations of CPU, memory, storage, heterogeneous hardware, and network bandwidth. This gives you theflexibility in selecting the appropriate mix of resources for your applications.
Tencent Cloud CVM is pay-as-you-go. Instances can be activated and terminated at any time, and you only pay forresources used. This flexible billing mode lets you meet fluctuating demands while keeping costs low. In addition,
usage is billed in seconds to further maximize your savings.

Instance Type
Tencent Cloud instance families are categorized as follows:Type

Sub-type

Description

Standard S8﻿
Standard SA5﻿Standard SA4﻿Standard S6﻿

Standard
Instance
FamilyMemoryOptimized

Standard SA3
Standard SR1
Standard S5
Standard Storage
Optimized S5se
Standard SA2Standard S4
Standard Network
Optimized SN3ne
Standard S3
Standard SA1
Standard Network
Optimized S2ne
Standard S2Standard S1
MEM-optimized M8﻿
MEM-optimized MA5﻿
MEM-optimized MA4﻿©2013-2022 Tencent Cloud. All rights reserved.

Standard instances provide a balance of compute, memory, andnetwork resources to accommodate most applications.

Memory optimized instances feature large memory and aresuitable for applications that require extensive memory

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Instance

MEM-optimized MA3﻿

operations, searches, and computations, such as high-

FamilyMemory Optimized M6

performance databases and distributed memory caching.

Security-enhanced
Memory Optimized
M6ce
Memory Optimized M5
Memory Optimized
MA2
Memory Optimized M4
Memory Optimized M3
Memory Optimized M2
Memory Optimized M1
High I/O
Instance

High I/O ITA5High I/O IT5﻿

FamilyHigh I/O IT3

Big Data
Instance
FamilyBig Data D3
Big Data D2High I/O instances feature high random IOPS, high throughput
and low latency. They are suitable for I/O-intensive applications
that require high disk read/write performance and low latency,such as high-performance databases.
This instance family is equipped with massive storage resources,
features high throughput, and is suitable for throughput-intensive
applications such as Hadoop distributed computing, massive log
processing, distributed file systems, and large data warehouses.

Compute Optimized
C6

ComputingInstance
FamilyCompute Optimized
C5
Compute Optimized
C4
Compute Networkoptimized CN3

This family comes with a turbo frequency up to 3.8 GHz, andprovides the highest single-core computing performance. It is
suitable for compute-intensive applications such as batchprocessing, high performance computing, and dedicated gameservers.

Compute C3
Compute C2This family is equipped with heterogeneous hardware such as
GPU and FPGA to deliver real-time, fast parallel computing andHeterogeneous
ComputingInstance
Family-floating-point computing capabilities. It is suitable for highperformance applications such as deep learning, scientificcomputing, video encoding/decoding, and graphics workstations.

Note:
Some of the families are discontinued.

Glossary©2013-2022 Tencent Cloud. All rights reserved.

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Send/Receive Packets: the maximum number of data packets that the instance can process per second for bothsending and receiving, without differentiating private or public network traffic.
Private Network Bandwidth Capacity: the maximum number of bits that the instance can transfer per second overprivate network.
Multi-queue Technology: multiple send/receive packet queues are supported on a virtual ENI, with the sending andreceiving of the data packets of each queue capable of being simultaneously processed by different CPUs.
Number of Queues: the quantity of send/receive packet queues supported by each virtual ENI (N number of queues
indicates that N number of receiving queues and N number of sending queues can be simultaneously supported).

Restrictions on Instances
The total number of instances that can be enabled in one region is limited. For more information, please see CVM
Instance Purchase Limit.
Restrictions on system and data disks mounted on an instance: to ensure premium disk I/O performance, Tencent
Cloud sets limits on the size and type of data disks purchased with an instance. For more information, see thesupported disks of each instance family. You can also purchase separate cloud disks if you have higher diskrequirements.
Note that the private network bandwidth capacity of an instance specification is the maximum private network
bandwidth limit of the corresponding instance. If the CVM private network traffic exceeds this limit, random packet loss
may happen within the private network for your instances.
The availability of instance specifications may vary from region to region. Some configurations may be sold out. Please
see the purchase page for the latest information.
The send/receive packets performance data noted in this document is the results of a one-time network forwarding
test. See Network Performance Test for the testing method. Separate testing is needed to estimate the performancefor your business.
Here is a complete list of instance families.

Standard Instance Family
Standard instances provide a balance of compute, memory, and network resources to accommodate mostapplications.

Standard S8
The Standard S8 instance is the latest generation of standard instances. Based on a newly optimized virtualization
platform, it provides balanced, stable computing, memory, and network resources, making it the optimal choice for awide range of applications.

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Cloud Virtual Machine

The Standard S8 instance uses the new Intel Emerald Rapids processor, the latest DDR5 memory, and with default
network optimization. The maximum private network packet receive and send processing capability reaches 45 million
pps, with the highest private network bandwidth supporting up to 120 Gbps.

Instance Features
The new generation Tencent Cloud self-developed Star Lake two-way server is equipped with an Intel Emerald
Rapids processor.
Uses the Intel Emerald Rapids processor with Turbo Boost up to 3.0 GHz.
Offers a variety of processor to memory ratios, including 1:2 and 1:4.
Supports up to 120 GB private network bandwidth, 45 million PPS, with exceptional network packet receive and send
processing capability, meeting the demands for high private network transfer requirements.
The network performance of instances corresponds to their specifications. Higher specifications result in stronger
network forwarding performance and higher private network bandwidth limits.
Supports the configuration to disable or enable Hyper-Threading.
Supports burst bandwidth.
Note:
Burst bandwidth: The size of private network bandwidth is related to instance specifications, each having its own
maximum private network bandwidth limit. In scenarios where network traffic surges within a short duration, Tencent
Cloud servers offer burst bandwidth processing capabilities. For cloud servers that meet burst conditions, exceedingof the private network bandwidth limit for a short period is allowed, catering to customer business needs.
Supports Jumbo Frames
Note:
Jumbo frames: Tencent Cloud supports sending Ethernet frames with an 8500-byte payload. Using Jumbo frames
can fully maximize network performance, making it suitable for storage scenarios and other high traffic situations,
thereby enhancing transmission efficiency.
Use Cases
The Standard S8 instance can be applied to the following scenarios:
Various types and sizes of enterprise-level applications.
Medium and small database systems, caching, and search clusters.
Compute clusters, memory-dependent data processing.
Scenarios with high demanding of network packet receive and send processing, such as video danmaku, live
streaming, games, etc.
Instance Requirements
S8 instances can be used as monthly subscription instances as well as pay-as-you-go billing instances.
S8 instances can only be launched in a Virtual Private Cloud.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

It is recommended to pair with the TencentOS Server operating system for optimal application performance of theinstance.
See the specifications below to see the sizes of S8 instances available for purchase. Ensure the size of the S8
instance you choose meets the minimum CPU and memory requirements of your operating system and application.
An Instance can support up to 120 Gbps of network bandwidth, depending on the kernel version and runtime
environment of the instance operating system. When PPS exceeds 10 million and the bandwidth exceeds 50 Gbps,
the kernel protocol stack can cause significant network performance loss. In such cases, the bandwidth values tested
by netperf may not meet expectations. The DPDK method can be used to overcome the differences in the cloudserver's kernel protocol stack, getting the instance's real network performance. For testing methods, see highthroughput network performance testing.
C

NetworkSpecification

vCPU

Memory(GB)

PacketReceiveand Send(pps)(OutboundStandard
Number ofConnections

NumberofQueues+ Inbound)

Bandwidth/Burst
Bandwidth(Gbps)(Outbound +Inbound)S
S

W

S8.MEDIUM82

8400,000

250,0002

1.5/102

S8.LARGE84

8800,000

250,000

4

2/10

2

S8.LARGE164

16800,000

250,000

4

2/10

2

S8.2XLARGE168

161,600,000

500,000

8

4/10

4

S8.2XLARGE32

8

32

1,600,000

500,000

8

4/10

4

S8.4XLARGE32

16

32

3,200,000

1,100,000

16

9/10

6

S8.4XLARGE64

16

64

3,200,000

1,100,000

16

9/10

6

S8.8XLARGE64

32

64

6,400,000

2,200,000

32

17/25

S8.8XLARGE128

32

128

6,400,000

2,200,000

32

17/25

S8.14XLARGE256

56

256

11,200,000

4,000,000

48

30

S8.16XLARGE256

64

256

12,800,000

4,500,000

48

34

2

S8.28XLARGE512

112

512

22,500,000

8,000,000

48

60

3

S8.56XLARGE1024

224

1024

45,000,000

16,000,000

48

120

6

©2013-2022 Tencent Cloud. All rights reserved.

Page 24 of 191

Cloud Virtual MachineStandard SA5
The Standard SA5 instance is the latest generation of standard instances. Based on a newly optimized virtualization
platform, it provides balanced, stable computing, memory, and network resources, making it the optimal choice for awide range of applications.
The Standard SA5 instance uses the new AMD EPYC™ Bergamo processor, the latest DDR5 memory, and withdefault network optimization. The maximum private network packet receive and send processing capability reaches
45 million pps.
Instance Features
The new generation Tencent Cloud self-developed Star Lake two-way server is equipped with an AMD EPYC™
Bergamo processor with Turbo Boost up to 3.1 GHz.
Offers a variety of processor to memory ratios, including 1:2 and 1:4.
Supports up to 45 million PPS, with exceptional network packet receive and send processing capability, meeting thedemands for high private network transfer requirements.
The network performance of instances corresponds to their specifications. Higher specifications result in stronger
network forwarding performance and higher private network bandwidth limits.
Supports the configuration to disable or enable Hyper-Threading.
Supports burst bandwidth.
Note:
Burst bandwidth: The size of private network bandwidth is related to instance specifications, each having its own
maximum private network bandwidth limit. In scenarios where network traffic surges within a short duration, Tencent
Cloud servers offer burst bandwidth processing capabilities. For cloud servers that meet burst conditions, exceedingof the private network bandwidth limit for a short period is allowed, catering to customer business needs.
Supports Jumbo Frames
Note:
Jumbo frames: Tencent Cloud supports sending Ethernet frames with an 8500-byte payload. Using Jumbo frames
can fully maximize network performance, making it suitable for storage scenarios and other high traffic situations,
thereby enhancing transmission efficiency.
Use Cases
The Standard SA5 instance can be applied to the following scenarios:
Various types and sizes of enterprise-level applications.
Medium and small database systems, caching, and search clusters.
Compute clusters, memory-dependent data processing.
Scenarios with high demanding of network packet receive and send processing, such as video danmaku, live
streaming, games, etc.
Instance Requirements©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

SA5 instances can be used as monthly subscription instances as well as pay-as-you-go billing instances.
SA5 instances can only be launched in the Virtual Private Cloud.
It is recommended to pair with the TencentOS Server operating system for optimal application performance of theinstance.
See the specifications below to see the sizes of SA5 instances available for purchase. Ensure the size of the SA5
instance you choose meets the minimum CPU and memory requirements of your operating system and application. In
many use cases, operating systems with GUIs that consume a lot of memory and CPU resources (such as Windows)
may need larger instance sizes. As your workload's memory and CPU needs increase over time, you can scale tohigher configurations or choose other types of instances.
Depends on the support from the instance's operating system kernel version and runtime environment. When PPS
exceeds 10 million and the bandwidth exceeds 50 Gbps, the kernel protocol stack can cause significant network
performance loss. In such cases, the bandwidth values tested by netperf may not meet expectations. The DPDK
method can be used to overcome the differences in the cloud server's kernel protocol stack, getting the instance's real
network performance. For testing methods, see high-throughput network performance testing.
Network

Standard

PacketSpecification

vCPU

Memory(GB)

Receiveand Send(pps)(OutboundNumber ofConnections

NumberofQueues+ Inbound)

Bandwidth/Burst
Bandwidth(Gbps)(Outbound +Inbound)

SA5.MEDIUM22

2

250,000

250,0002

1.5/10SA5.MEDIUM42

4250,000

250,0002

1.5/10SA5.LARGE848300,000

250,000

4

1.5/10SA5.LARGE164

16300,000

250,000

4

1.5/10

SA5.2XLARGE168

16700,000

250,000

8

3/10

SA5.2XLARGE32

8

32

700,000

250,000

8

3/10

SA5.4XLARGE32

16

32

1,400,000

500,000

16

5/10

SA5.4XLARGE64

16

64

1,400,000

500,000

16

5/10

SA5.8XLARGE6432

642,800,000

1,000,000

32

10/25

SA5.8XLARGE128

32

128

2,800,000

1,000,000

32

10/25

SA5.12XLARGE96

48

96

4,200,000

1,500,000

48

15/25

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

SA5.12XLARGE192

48

192

4,200,000

1,500,000

48

15/25

SA5.16XLARGE256

64

256

5,600,000

2,000,000

48

20/25

SA5.16XLARGE288

64

288

5,600,000

2,000,000

48

20/25

SA5.32XLARGE576

128

576

11,200,000

4,000,000

48

40/-

SA5.64XLARGE1152

256

1152

22,500,000

8,000,000

48

80/-

SA5.128XLARGE2304

512

2304

45,000,000

16,000,000

48

160/-

Standard SA4
The Standard SA4 instance is based on a newly optimized virtualization platform, it provides balanced, stablecomputing, memory, and network resources, making it the optimal choice for a wide range of applications.
The Standard SA4 instance uses the new AMD EPYC™ Genoa processor, the latest DDR5 memory, and with default
network optimization. The maximum private network packet receive and send processing capability reaches 45 million
pps, with the highest private network bandwidth supporting up to 100 Gbps.
Instance Features
The new generation Tencent Cloud self-developed Star Lake two-way server is equipped with the AMD EPYC™
Genoa processor.
Uses the AMD EPYC™ Genoa processor with Turbo Boost up to 3.7GHz.
Offers a variety of processor to memory ratios, including 1:2 and 1:4
Supports up to 100 GB private network bandwidth, 45 million PPS, with exceptional network packet receive and send
processing capability, meeting the demands for high private network transfer requirements.
The network performance of instances corresponds to their specifications. Higher specifications result in stronger
network forwarding performance and higher private network bandwidth limits.
Supports the configuration to disable or enable Hyper-Threading.
Use Cases
The Standard SA4 instance can be applied to the following scenarios:
Various types and sizes of enterprise-level applications.
Medium and small database systems, caching, and search clusters.
Compute clusters, memory-dependent data processing.
Scenarios with high demanding of network packet receive and send processing, such as video danmaku, live
streaming, games, etc.
Instance Requirements©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

SA4 instances can be used as monthly subscription instances as well as pay-as-you-go billing instances.
SA4 instances can only be launched in a Virtual Private Cloud.
It is recommended to pair with the TencentOS Server operating system for optimal application performance of theinstance.
Refer to the specifications below to see the sizes of SA4 instances available for purchase. Ensure the size of the SA4
instance you choose meets the minimum CPU and memory requirements of your operating system and application. In
many use cases, operating systems with GUIs that consume a lot of memory and CPU resources (such as Windows)
may need larger instance sizes. As your workload's memory and CPU needs increase over time, you can scale tohigher configurations or choose other types of instances.
An Instance can support up to 100 Gbps of network bandwidth, depending on the kernel version and runtime
environment of the instance operating system. When PPS exceeds 10 million and the bandwidth exceeds 50 Gbps,
the kernel protocol stack can cause significant network performance loss. In such cases, the bandwidth values tested
by netperf may not meet expectations. The DPDK method can be used to overcome the differences in the cloudserver's kernel protocol stack, getting the instance's real network performance. For testing methods, see highthroughput network performance testing.

Specification

vCPU

Memory(GB)

Network

PrivatePacketReceive

NumberNetwork
BandwidthofQueuesCapacity(Gbps)and Send(pps)

Number ofConnections(Outbound(Outbound+ Inbound)+ Inbound)Rema

SA4.2XLARGE168

16900,000

300,000

82-

SA4.2XLARGE32

8

32

900,000

300,000

82-

SA4.4XLARGE32

16

32

1,800,000

600,000

16

4-

SA4.4XLARGE64

1664

1,800,000

600,000

16

4-

SA4.8XLARGE6432

64

3,700,000

1,300,000

32

8

-

SA4.8XLARGE128

32

128

3,700,000

1,300,000

32

8

-

SA4.16XLARGE128

64

128

7,500,000

2,600,000

48

17

-

SA4.16XLARGE256

64

256

7,500,000

2,600,000

48

17

-

SA4.24XLARGE192

96

192

11,200,000

4,000,000

48

25

-

SA4.48XLARGE384

192

384

22,500,000

8,000,000

48

50

-

SA4.96XLARGE768

384

768

45,000,000

16,000,000

48

100

-

©2013-2022 Tencent Cloud. All rights reserved.

Page 28 of 191

Cloud Virtual MachineStandard S6
As the latest generation of standard instances, S6 instances are powered by an all-new optimized virtualization
platform, and provide balanced and stable compute, memory, and network resources. These instances are ideal formany applications.
S6 instances come with the new Intel® Xeon® processors with the latest DDR4 memory. They are network optimized
by default, offering a private network throughput of up to 19 million pps and a private network bandwidth of up to 100
Gbps.
Note:
This instance type is now only available to beta users. Contact your account manager to purchase it.
FeaturesA new-generation Star Lake two-way server developed by Tencent Cloud, with the 3rd generation Intel® Xeon®
scalable processor.
Intel® Xeon® Ice Lake processor, with a CPU clock rate of 2.7 GHz and a turbo frequency of 3.3 GHz.
Supported CPU/RAM ratios: 1:2 and 1:4.
Supports up to 100 Gbps of private network bandwidth, providing ultra-high packet throughput to meet high private
network transmission requirements.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Supports hyper-threading.
Use Cases
Standard S6 instances are applicable to the following scenarios:
Enterprise applications of different types and sizes.
Small and medium-sized database systems, caches, and search clusters.
Computing clusters, memory-intensive data processing.
Scenarios that require sending and receiving massive network packets, such as video on-screen comments, live
video broadcasting, and gaming.
Requirements
Supports pay-as-you-go.
Supports only VPC.
See below for available S6 instance specifications. Make sure that the instance specification you choose meets theminimum CPU and memory requirements of your operating system and applications. In many cases, GUI operating
systems (such as Windows) that consume extensive memory and CPU resources may need higher specifications. As
the needs of your workload for memory and CPU increase, you can choose higher configurations or other instancetypes.
Specification

vCPU

Memory©2013-2022 Tencent Cloud. All rights reserved.

Throughput

Number of

NumberPrivateCPU

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Cloud Virtual Machine

(GB)

(pps)

connections(receivedof

networkclock

queuesbandwidthrateand sent
packets)(Gbps)(outboundandinbound)

S6.SMALL11

1260,000

260,000

1

1.6

2.7GHzS6.SMALL21

2

260,000

260,000

1

1.6

2.7GHzS6.SMALL41

4260,000

260,000

1

1.6

2.7GHzS6.MEDIUM42

4300,000

260,000

2

2

2.7GHzS6.MEDIUM82

8300,000

260,000

2

2

2.7GHzS6.LARGE84

8600,000

600,000

4

4

2.7GHzS6.LARGE164

16600,000

600,000

4

4

2.7GHzS6.2XLARGE168

161,200,000

1,000,000

87

2.7GHzS6.2XLARGE32

832

1,200,000

1,000,000

87

2.7GHzS6.4XLARGE32

16

32

2,600,000

2,000,000

16

132.7GHzS6.4XLARGE64

16

642,600,000

2,000,000

16

132.7GHzS6.8XLARGE64

32

64

6,000,000

4,000,000

32

26

2.7GHzS6.8XLARGE128

32

128

6,000,000

4,000,000

32

26

2.7GHzS6.12XLARGE96

48

96

7,000,000

6,000,000

48

39

2.7GHzS6.12XLARGE192

48

192

7,000,000

6,000,000

48

39

2.7GHzS6.16XLARGE266

64

266

10,000,000

8,000,000

48

62

2.7GHzS6.31MEDIUM216

62

216

10,000,000

6,000,000

48

60

2.7GHzS6.16XLARGE216

64

216

10,000,000

8,000,000

48

50

2.7GHzS6.32XLARGE432

128

432

15,000,000

16,000,000

48

100

2.7GHzStandard SA3©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

SA3 instances are optimized with the latest generation of AMD EPYCTM processor. They deliver ultra-high cost
performance with a variety of specifications, and provide a balance of compute, storage, and network resources,
making them ideal for many applications.
SA3 instances come with the new AMD EPYCTM Milan processors with the latest DDR4 memory. They are network
optimized by default, offering a private network throughput up to 19 million pps and a private network bandwidth up to
100 Gbps.
Note:
This instance type is now only available to beta users. Contact your account manager to purchase it.
Features
Provides high performance with high reliability, security, and stability based on the Star Lake servers developed byTencent Cloud.
Comes with 2.55 GHz AMD EPYCTM Milan processor, with a turbo frequency of 3.5GHz and the latest generation of
8-channel DDR4 for stable memory computing performance.
Higher specification, SA3.58XLARGE940, offering 232 vCPUs and 940 GB memory.
A wide range of CPU/RAM ratios, such as 1:2 and 1:4.
Supports up to 100 Gbps of private network bandwidth for ultra-high packet throughput to meet extremely high private
network transmission requirements.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Use Cases
Standard SA3 instances are applicable to the following scenarios:
Enterprise applications of different types and sizes.
Search and other computing clusters.
Video encoding and decoding, video rendering and other applications sensitive to the single-core performance.
Requirements
Supports pay-as-you-go.
Supports only VPC.
See below for available SA3 instance specifications. Make sure that the instance specification you choose meets theminimum CPU and memory requirements of your operating system and applications. In many cases, GUI operating
systems (such as Windows) that consume extensive memory and CPU resources may need higher specifications. As
the needs of your workload for memory and CPU increase, you can choose higher configurations or other instancetypes.
With the support of appropriate operating system kernel version and runtime environment, the instance’s network
bandwidth can reach up to 100 Gbps. If the network throughput is larger than 10 million pps and the network
bandwidth is higher than 50 Gbps, the kernel protocol stack consumes a lot of network resources. In this case, the©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

resulted bandwidth of netperf test may not meet the expectation. To obtain the actual network performance of theinstance, use the DPDK method to shield the difference caused by the kernel protocol stack.
PrivatenetworkThroughput
Specification

vCPU

Memory(GB)(pps)(received
and sent
packets)

Number ofconnections

Numberofqueuesbandwidth(Gbps)(outbound
and

CPU
clock
rate

inbound)
SA3.SMALL11

1250,000

250,000

1

1.5

2.55GH

SA3.SMALL21

2250,000

250,000

1

1.5

2.55GH

SA3.SMALL41

4250,000

250,000

1

1.5

2.55GH

SA3.MEDIUM42

4300,000

250,000

2

1.5

2.55GH

SA3.MEDIUM82

8300,000

250,000

2

1.5

2.55GH

SA3.LARGE848500,000

250,000

4

2

2.55GH

SA3.LARGE164

16500,000

250,000

4

2

2.55GH

SA3.2XLARGE168

32

800,000

500,000

8

4

2.55GH

SA3.2XLARGE32

8

32

800,000

500,000

8

4

2.55GH

SA3.4XLARGE32

16

32

1,500,000

1,100,000

1672.55GH

SA3.4XLARGE64

1664

1,500,000

1,100,000

1672.55GH

SA3.8XLARGE64

32

642,500,000

2,200,00032

142.55GH

SA3.8XLARGE128

32

128

2,500,000

2,200,00032

142.55GH

SA3.12XLARGE96

48

96

4,000,000

3,300,000

48

21

2.55GH

SA3.12XLARGE192

48

192

4,000,000

3,300,000

48

21

2.55GH

SA3.16XLARGE128

64

128

5,200,000

4,400,000

48

28

2.55GH

SA3.16XLARGE256

64

256

5,200,000

4,400,000

48

28

2.55GH

SA3.20XLARGE160

80

160

6,500,000

5,500,000

4835

2.55GH

SA3.20XLARGE320

80

320

6,500,000

5,500,000

4835

2.55GH©2013-2022 Tencent Cloud. All rights reserved.

Page 32 of 191

Cloud Virtual Machine

SA3.24XLARGE192

96

192

7,800,000

6,600,000

4842

2.55GH

SA3.24XLARGE384

96

384

7,800,000

6,600,000

4842

2.55GH

SA3.29XLARGE216

116

216

9,500,000

8,000,000

4850

2.55GH

SA3.29XLARGE470

116

470

9,500,000

8,000,000

4850

2.55GHSA3.32XLARGE256

128

256

10,000,000

8,800,000

48

56

2.55GHSA3.32XLARGE512

128

512

10,000,000

8,800,000

48

56

2.55GH

SA3.40XLARGE320

160

320

13,000,000

11,000,000

48

69

2.55GH

SA3.40XLARGE640

160

640

13,000,000

11,000,000

48

69

2.55GH

SA3.58XLARGE432

232

432

19,000,000

16,000,000

48

100

2.55GH

SA3.58XLARGE940

232

940

19,000,000

16,000,000

48

100

2.55GH

Standard SR1
Standard SR1 instances are the latest generation of ARM standard instances. Based on an all-new optimized
virtualization platform, this family provides a balance of stable computing, memory, and network resources. This is apremium choice for many applications.
Features
Use the Ampere® Altra® processor with a clock rate of 2.8 GHz and a turbo frequency of 3.0 GHz.
A wide range of processor to memory ratio, such as 1:2 and 1:4.
Support premium, SSD and enhance SSD cloud diks.
Support up to 25 Gbps of private network bandwidth for ultra-high packet throughput to meet the needs of extremely
high private network transmission demand.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Use Cases
Standard SR1 instances are applicable to the following scenarios:
Enterprise applications of different types and sizes.
ARM simulation testing.
Embedded development and testing.
CPU-based machine learning and reasoning.
Requirements©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Support purchase configuration. See the instance specifications below to make sure that the size of the SR1 instanceyou selected meets the minimum CPU memory requirement for your operating system and application. As yourworkload demands more memory and CPU over time, you can expand to a higher configuration or choose other typesof instances.
PrivateThroughput
Specification

vCPU

Memory(GB)(pps)(received
and sent

Numberofqueuespackets)

network
bandwidth(Gbps)(outbound

Clock
rate

Notes

and
inboundbandwidth)

SR1.SMALL11

1250,000

1

1.5

2.8GHz-

SR1.SMALL21

2250,000

1

1.5

2.8GHz-SR1.MEDIUM42

4250,000

2

1.5

2.8GHz-SR1.MEDIUM82

8250,000

2

1.5

2.8GHz-

SR1.LARGE848250,000

2

1.5

2.8GHz-

SR1.LARGE16

4

16

250,000

2

1.5

2.8GHz-SR1.2XLARGE168

16500,000

2

3

2.8GHz-SR1.2XLARGE32

8

32

500,000

2

3

2.8GHz-SR1.4XLARGE32

16

32

1,100,000

462.8GHz-SR1.4XLARGE64

16

64

1,100,000

462.8GHz-SR1.8XLARGE6432

64

2,200,0008

122.8GHz-SR1.8XLARGE128

32

128

2,200,0008

122.8GHz-SR1.16XLARGE128

64

128

4,500,000

16

162.8GHz-Standard S5
Standard S5 instances are the latest generation of standard instances. Based on an all-new optimized virtualization
platform, this family provides a balance of stable computing, memory, and network resources. This is a premium
choice for many applications.
Features©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual MachineIntel® Xeon® Cascade Lake or Intel® Xeon® Cooper Lake processor, with a CPU clock rate of 2.5 GHz and turbo
frequency of 3.1 GHz.
New Intel Advanced Vector Extension (AVX-512) instruction set.
Supported CPU/RAM ratios: 1:2 and 1:4.
Supports up to 28 Gbps of private network bandwidth for ultra-high packet throughput to meet the needs of extremely
high private network transmission demand.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Supports the configuration to disable or enable Hyper-Threading.
Application Scenarios
Standard S5 instances are applicable to the following scenarios:
Enterprise applications of different types and sizes
Small and medium-sized database systems, caches, and search clusters.
Computing clusters, memory-intensive data processing.
Scenarios that require sending and receiving massive network packets, such as video on-screen comments, live
video broadcasting, and gaming.
Requirements
Supports pay-as-you-go.
Supports only VPC.
Configuration purchase is available for S5 instances. Please see the instance specifications below. Make sure that thesize of the S5 instance you choose meet the minimum CPU memory requirements of your operating system andapplications. In many cases, GUI operating systems (such as Windows) that consume extensive memory and CPU
resources may need larger instances. As the needs of your workload for memory and CPU increase, you can expand
to higher configurations or choose other instance types.
PrivatenetworkThroughput
Specification

vCPU

Memory(GB)(pps)(received
and sent
packets)

Number ofconnections

Numberofqueuesbandwidth(Gbps)(outbound
and

CPU
clock
rate

inbound)
S5.SMALL11

1250,000

250,000

1

1.5

2.5
GHz

S5.SMALL21

2250,000

250,000

1

1.5

2.5
GHz

S5.SMALL41

4250,000

250,000

1

1.5

2.5

©2013-2022 Tencent Cloud. All rights reserved.

Page 35 of 191

Cloud Virtual MachineGHz
S5.MEDIUM42

4300,000

250,000

2

1.5

2.5
GHz

S5.MEDIUM82

8300,000

250,000

2

1.5

2.5
GHz

S5.LARGE84

8500,000

250,000

2

1.5

2.5
GHz

S5.LARGE164

16500,000

250,000

2

1.5

S5.2XLARGE168

16800,000

250,000

2

3.0

S5.2XLARGE32

8

32

800,000

250,000

2

3.0

2.5
GHz

S5.4XLARGE32

16

32

1,500,000

300,000

4

6.0

2.5
GHz

S5.4XLARGE64

1664

1,500,000

300,000

4

6.0

2.5
GHz

S5.6XLARGE48

24

48

2,000,000

400,000

6

9.0

2.5
GHz

S5.6XLARGE96

24

96

2,000,000

400,000

6

9.0

S5.8XLARGE64

32

642,500,000

600,000

8

12

S5.8XLARGE128

32

128

2,500,000

600,000

8

12

2.5
GHz

S5.12XLARGE96

48

96

4,000,000

900,000

12

17.0

2.5
GHz

S5.12XLARGE192

48

192

4,000,000

900,000

12

17.0

2.5
GHz

S5.16XLARGE256

64

256

5,000,000

1,200,000

16

23.0

2.5
GHz

©2013-2022 Tencent Cloud. All rights reserved.

2.5
GHz
2.5
GHz

2.5
GHz
2.5
GHz

Page 36 of 191

Cloud Virtual MachineStandard Storage Optimized S5se
Based on an all-new optimized virtualization platform, S5se instances improve the overall cloud disk performance.
They are powered by new Xeon® Cascade Lake processors with the latest DDR4 memory to provide the excellent
cloud disk performance.
Features
Supports Premium Cloud Storage and SSD as the system disk.
Supports Tremendous SSD as the data disk.
Provides cloud disk storage performance of up to 1,200,000 IOPS, and read/write bandwidth of 4 GB/s.
2.5 GHz Intel® Xeon® Cascade Lake processor, with a turbo frequency 3.1 GHz and the latest generation 6-channel
DDR4 for stable memory computing performance.
New Intel Advanced Vector Extension (AVX-512) instruction set.
Supported CPU/RAM ratios: 1:2 and 1:4.
Supports up to 25 Gbps of private network bandwidth for ultra-high packet throughput to meet extremely high private
network transmission requirements.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Supports the configuration to disable or enable Hyper-Threading.
Application Scenarios
Standard Storage Optimized S5se instances are applicable to the following scenarios:
Enterprise applications of different types and sizes.
IO-intensive applications including large databases, NoSQL databases, audio/video processing services, andElasticsearch cluster.
Requirements
Supports pay-as-you-go.
Supports only VPC.
See below for available S5se specifications:Throughput(pps)

Specification

vCPU

Memory(GB)

S5se.LARGE164

16500,000

S5se.2XLARGE168

16800,000©2013-2022 Tencent Cloud. All rights reserved.

(received
and sent
packets)

Number ofconnections

NumberPrivatenetwork
bandwidthCPUofqueues(Gbps)(outboundandinbound)

clock
rate

250,000

2

1.5

2.5GH

250,000

2

3.0

2.5GH

Page 37 of 191

Cloud Virtual Machine

S5se.2XLARGE32

8

32

800,000

250,000

2

3.0

2.5GH

S5se.4XLARGE32

16

32

1,500,000

300,000

4

6.0

2.5GH

S5se.4XLARGE64

1664

1,500,000

300,000

4

6.0

2.5GH

S5se.8XLARGE64

32

642,500,000

600,000

8

12.0

2.5GH

S5se.8XLARGE128

32

128

2,500,000

600,000

8

12.0

2.5GH

S5se.17XLARGE316

68

316

5,000,000

1,200,000

16

25.0

2.5GH

Standard SA2
SA2 instances are optimized with the latest generation AMD EPYC™ processor, deliver ultra-high cost performancewith a variety of specifications, and provide a balance of compute, memory, and network resources, making them
ideal for many applications.
SA2 instances come with the new AMD EPYC™ ROME processors with the latest DDR4 memory. They are network
optimized by default, offering a private network throughput up to 7,500,000 pps and support up to 25 Gbps of private
network bandwidth.
Features
Provides high performance with high reliability, security, and stability based on the Star Lake servers developed byTencent Cloud.
2.6 GHz AMD EPYC™ ROME processor, with a turbo frequency 3.3 GHz and the latest generation 8-channel DDR4for stable memory computing performance.
Higher specification, SA2.45XLARGE464, offering 180 vCPUs and 464 GB memory.
A wide range of CPU/RAM ratios, such as 1:2 and 1:4.
Supports up to 25 Gbps of private network bandwidth for ultra-high packet throughput to meet extremely high private
network transmission requirements.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Supports the configuration to disable or enable Hyper-Threading.
Application Scenarios
Standard SA2 instances are applicable to the following scenarios:
Enterprise applications of different types and sizes.
Search and other computing clusters.
Video encoding and decoding, video rendering and other applications sensitive to the single-core performance.
Requirements©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Supports pay-as-you-go.
Supports only VPC.
See below for available SA2 instance specifications. Make sure that the instance specification you choose meet theminimum CPU memory requirements of your operating system and applications. In many cases, GUI operating
systems (such as Windows) that consume extensive memory and CPU resources may need higher specifications. As
the needs of your workload for memory and CPU increase, you can choose higher configurations or other instancetypes.
PrivateSpecification

vCPU

Memory(GB)

Throughput(pps)(received
and sent

Numberofqueuespackets)

network
bandwidth(Gbps)(outbound

CPU
clock
rate

Notes

and
inbound)

SA2.SMALL11

1250,000

1

1.5

2.6
GHz

-

SA2.SMALL21

2250,000

1

1.5

2.6
GHz

-

SA2.SMALL41

4250,000

1

1.5

SA2.MEDIUM42

4300,000

2

1.5

SA2.MEDIUM82

8300,000

2

1.5

2.6
GHz

-

SA2.LARGE848500,000

2

1.5

2.6
GHz

-

SA2.LARGE164

16500,000

2

1.5

2.6
GHz

-

SA2.2XLARGE168

16700,000

2

1.5

2.6
GHz

-

SA2.2XLARGE32

8

32

700,000

2

1.5

SA2.4XLARGE32

16

32

1,000,000

4

3.0

2.6GHz-SA2.4XLARGE64

16

64

1,000,000

4

3.0

2.6GHz-©2013-2022 Tencent Cloud. All rights reserved.

2.6

-

GHz
2.6

-

GHz

2.6

-

GHz

Page 39 of 191

Cloud Virtual Machine

SA2.8XLARGE64

32

64

1,400,000

8

5.0

2.6GHz-SA2.12XLARGE96

48

96

2,100,000

12

7.0

2.6GHz-SA2.16XLARGE128

64

128

2,800,000

16

9.0

2.6GHz-SA2.20XLARGE160

80

160

3,500,000

16

12.0

2.6GHz-SA2.22XLARGE224

90

224

3,750,000

16

13.0

2.6GHz-SA2.24XLARGE192

96

192

4,200,000

16

14.0

2.6GHz-SA2.32XLARGE256

128

256

5,600,000

32

18.0

2.6GHz-SA2.40XLARGE320

160

320

7,100,000

32

23.0

2.6GHz-SA2.45XLARGE464

180

464

7,500,000

32

25.0

2.6GHz-Standard S4S4 instances provide a balance of compute, memory, and network resources, making them ideal for many
applications.
S4 instances come with new Xeon® Skylake processors with the latest DDR4 memory. They are network optimized
by default, offering a private network throughput up to 6,000,000 pps, and support up to 25 Gbps of private network
bandwidth.
Features
2.4 GHz Intel® Xeon® Skylake 6148 processor, offering stable computing performance.
New Intel Advanced Vector Extension (AVX-512) instruction set.
The latest generation of 6-channel DDR4 memory with a bandwidth of 2,666 MT/s.
Higher specification, S4.18XLARGE228, offering 72 vCPUs and 228 GB memory.
Supported CPU/RAM ratios: 1:2 and 1:4.
Supports up to 25 Gbps of private network bandwidth for ultra-high packet throughput to meet extremely high private
network transmission requirements.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Application Scenarios
Standard S4 instances are applicable to the following scenarios:
Enterprise applications of different types and sizes.
Small and medium-sized database systems, caches, and search clusters.
Computing clusters, memory-intensive data processing.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Scenarios that require massive send/receive network packets, such as on-screen comments, live video broadcasting,and gaming.
Requirements
Supports pay-as-you-go.
Supports only VPC.
See below for available S4 instance specifications. Make sure that the instance specification you choose meet theminimum CPU memory requirements of your operating system and applications. In many cases, GUI operating
systems (such as Windows) that consume extensive memory and CPU resources may need higher specifications. As
the needs of your workload for memory and CPU increase, you can choose higher configurations or other instancetypes.
PrivatenetworkThroughput
Specification

vCPU

Memory(GB)(pps)(received
and sent
packets)

Numberofqueuesbandwidth(Gbps)(outbound
and

CPU
clock
rate

Notes

inbound)
S4.SMALL11

1250,000

1

1.5

2.4GHz

-S4.SMALL21

2250,000

1

1.5

2.4GHz

-S4.SMALL41

4250,000

1

1.5

2.4GHz-S4.MEDIUM42

4300,000

2

1.5

2.4GHz-S4.MEDIUM82

8300,000

2

1.5

2.4GHz-

S4.LARGE84

8500,000

2

1.5

2.4GHz-

S4.LARGE164

16500,000

2

1.5

2.4GHz-S4.2XLARGE168

16800,000

2

3.0

2.4
GHz

-

S4.2XLARGE32

8

32

800,000

2

3.0

2.4
GHz

-

S4.4XLARGE32

16

32

1,500,000

4

6.0

2.4
GHz

-

S4.4XLARGE64

1664

1,500,000

4

6.0

2.4
GHz

-

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

S4.6XLARGE48

24

48

2,000,000

6

8.0

2.4
GHz

S4.6XLARGE96

24

96

2,000,000

6

8.0

2.4
GHz

-

S4.8XLARGE64

32

642,500,000

8

11.0

2.4
GHz

-

S4.8XLARGE128

32

128

2,500,000

8

11.0

S4.12XLARGE96

48

96

4,000,000

12

16.0

S4.12XLARGE192

48

192

4,000,000

12

16.0

2.4
GHz

-

S4.16XLARGE256

64

256

5,000,000

16

22.0

2.4
GHz

-

S4.18XLARGE288

72

288

6,000,000

16

24.0

2.4
GHz

-

2.4
GHz
2.4
GHz

-

-

-

Standard Network Optimized SN3ne
Standard SN3ne instances are a relatively new generation of network optimized instances. This family provides abalance of computing, memory, and network resources, with outstanding network throughput, and it is a good choice
for many applications.
Standard Network Optimized SN3ne instances are equipped with the latest Xeon® Skylake processors with the latest
DDR4 memory, default network optimization, and private network throughput up to 6,000,000 pps, with performanceis nearly 8 times greater than the Standard S3 family. It can support up to 25 Gbps of private network bandwidth, withperformance 2.5 times greater than the Standard S3 family.
Features
2.5 GHz Intel Xeon® Skylake 6133 processors with stable computing performance.
The latest generation of 6-channel DDR4 memory with a memory bandwidth of 2,666 MT/s.
Larger instance size, SN3ne.18XLARGE228, offering 72 vCPUs and 228 GB of memory.
Supported CPU/RAM ratios: 1:2 and 1:4.
Supports up to 25 Gbps of private network bandwidth for ultra-high packet throughput to meet the needs of extremely
high private network transmission demand.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Support all types of cloud disks.
Application Scenarios
Standard Network Optimized SN3ne instances are applicable to the following scenarios:
Enterprise applications of different types and sizes.
Small and medium-sized database systems, caches, and search clusters.
Computing clusters, memory-intensive data processing.
Scenarios that require sending and receiving massive network packets, such as video on-screen comments, live
video broadcasting, and gaming.
Requirements
SN3ne instances are pay-as-you-go.
SN3ne instances can only be launched in a VPC.
Configuration purchase is available for SN3ne instances. Please see the instance specifications below. Make sure thatthe size of the SN3ne instance you choose meet the minimum CPU memory requirements of your operating system
and applications. In many cases, GUI operating systems (such as Windows) that consume extensive memory andCPU resources may need larger instances. As the needs of your workload for memory and CPU increase, you can
expand to higher configurations or choose other instance types.

Specification

vCPU

Memory(GB)

Throughput(pps)(received
and sent

Numberofqueuespackets)

Privatenetwork
bandwidth(Gbps)(outbound

CPU
clock
rate

Notes

and
inbound)

SN3ne.SMALL21

2250,000

1

1.5

2.5
GHz

-

SN3ne.MEDIUM42

4300,000

2

1.5

2.5
GHz

-

SN3ne.LARGE848500,000

2

1.5

2.5
GHz

-

SN3ne.LARGE164

16500,000

2

1.5

2.5
GHz

-

SN3ne.2XLARGE168

16800,000

2

3.0

2.5
GHz

-

SN3ne.2XLARGE32

8

32

800,000

2

3.0©2013-2022 Tencent Cloud. All rights reserved.

2.5
GHz

-

Page 43 of 191

Cloud Virtual Machine

SN3ne.3XLARGE24

12

24

1,000,000

3

4.0

2.5
GHz

-

SN3ne.4XLARGE32

16

32

1,500,000

4

6.0

2.5
GHz

-

SN3ne.4XLARGE64

1664

1,500,000

4

6.0

2.5
GHz

-

SN3ne.6XLARGE48

24

48

2,000,000

6

8.0

2.5
GHz

-

SN3ne.6XLARGE96

24

96

2,000,000

68.0

SN3ne.8XLARGE64

32

642,500,000811.0

SN3ne.8XLARGE128

32

128

2,500,000

8

11.0

2.5
GHz

-

SN3ne.12XLARGE96

48

96

4,000,000

12

16.0

2.5
GHz

-

SN3ne.12XLARGE192

48

192

4,000,000

12

16.0

2.5
GHz

-

SN3ne.16XLARGE128

64

128

5,000,000

16

22.0

2.5
GHz

-

SN3ne.16XLARGE256

64

256

5,000,000

16

22.0

2.5
GHz

-

SN3ne.18XLARGE288

72

288

6,000,000

16

24.0

2.5
GHz

-

2.5
GHz
2.5
GHz

-

-

Standard S3
Standard S3 instances are a relatively new generation of standard instances. This family provides a balance ofcomputing, memory, and network resources, and it is a good choice for many applications.
Standard S3 instances are equipped with the latest Xeon® Skylake processors with the latest DDR4 memory andsupport for up to 10 Gbps of private network bandwidth.
Features
2.5 GHz Intel Xeon® Skylake 6133 processors with stable computing performance.

©2013-2022 Tencent Cloud. All rights reserved.

Page 44 of 191

Cloud Virtual Machine

The latest generation of 6-channel DDR4 memory with a memory bandwidth of 2,666 MT/s.
Larger instance size, S3.20XLARGE320, offering 80 vCPUs and 320 GB of memory.
Supported CPU/RAM ratios: 1:2 and 1:4.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Support all types of cloud disks.
Application Scenarios
Standard S3 instances are applicable to the following scenarios:
Enterprise applications of different types and sizes.
Small and medium-sized database systems, caches, and search clusters.
Computing clusters, memory-intensive data processing.
Requirements
Supports pay-as-you-go.
Supports both classic network and VPC.
See below for available S3 instance specifications. Make sure that the instance specification you choose meets theminimum CPU and memory requirements of your operating system and applications. In many cases, GUI operating
systems (such as Windows) that consume extensive memory and CPU resources may need higher specifications. As
the needs of your workload for memory and CPU increase, you can choose higher configurations or other instancetypes.

Specification

vCPU

Memory(GB)

S3.SMALL1

1

S3.SMALL2

Throughput(pps)

NumberPrivatenetwork
bandwidthCPU(received
and sent
packets)ofqueues(Gbps)(outboundandinbound)1

200,000

1

1.5

2.5
GHz

-

1

2

200,000

1

1.5

2.5
GHz

-

S3.SMALL41

4200,000

1

1.5

2.5
GHz

-

S3.MEDIUM82

8250,000

2

1.5

2.5
GHz

-

S3.LARGE848450,000

4

1.5

2.5

-

©2013-2022 Tencent Cloud. All rights reserved.

clock
rate

Notes

Page 45 of 191

Cloud Virtual Machine

GHz
2.5

S3.LARGE164

16450,000

4

1.5

S3.2XLARGE168

16850,000

8

1.5

2.5
GHz

-

S3.2XLARGE32

8

32

850,000

8

1.5

2.5
GHz

-

S3.3XLARGE24

12

24

850,000

12

1.5

2.5
GHz

-

S3.3XLARGE48

12

48

850,000

12

1.5

2.5
GHz

-

S3.4XLARGE32

16

32

850,000

16

2.0

2.5
GHz

-

S3.4XLARGE64

16

64

850,000

16

2.0

2.5
GHz

-

S3.6XLARGE48

24

48

850,000

16

3.0

2.5
GHz

-

S3.6XLARGE96

24

96

850,000

16

3.0

2.5
GHz

-

S3.8XLARGE64

32

64

850,000

16

4.0

2.5
GHz

-

S3.8XLARGE128

32

128

850,000

16

4.0

2.5
GHz

-

S3.12XLARGE96

48

96

850,000

16

6.0

2.5
GHz

-

S3.12XLARGE192

48

192

850,000

16

6.0

S3.16XLARGE256

64

256

850,000

16

8.0

S3.20XLARGE320

80

320

850,000

16

10.0©2013-2022 Tencent Cloud. All rights reserved.

GHz

2.5
GHz
2.5
GHz
2.5
GHz

-

-

-

-

Page 46 of 191

Cloud Virtual MachineStandard SA1
A Standard SA1 instance uses the AMD EPYC™ processor. This ultra-high cost performance instance family
supports a variety of specifications, ensuring cost efficiency. Standard SA1 instances provides a balance ofcomputing, memory, and network resources, and it is a good choice for many applications.
Features
2.0 GHz AMD EPYC™ 7551 processors with a Turbo Boost clock of 2.55 GHz, offering stable computing
performance.
The latest generation of 8-channel DDR4 memory with a memory bandwidth of 2,666 MT/s.
Supported CPU/RAM ratios: 1:2 and 1:4.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Support all types of cloud disks.
Application Scenarios
Standard SA1 instances are applicable to the following scenarios:
Enterprise applications of different types and sizes.
Small and medium-sized database systems, caches, and search clusters.
Computing clusters, memory-intensive data processing.
Requirements
Supports pay-as-you-go.
Supports both classic network and VPC.
See below for available SA1 instance specifications. As the needs of your workload for memory and CPU increase,
you can choose higher configurations or other instance types.

Specification

vCPU

Memory(GB)

Throughput(pps)(received

NumberofPrivatenetwork
bandwidth(Gbps)and sent
packets)queues(outboundandinbound)

CPU
clock

Notes

rate

SA1.SMALL1

1

1

-

1

1.5

2.0
GHz

-

SA1.SMALL2

1

2

-

1

1.5

2.0
GHz

-

SA1.SMALL4

1

4

-

1

1.5

©2013-2022 Tencent Cloud. All rights reserved.

2.0
GHz

-

Page 47 of 191

Cloud Virtual Machine

SA1.MEDIUM4

2

4

-

2

1.5

2.0
GHz

-

SA1.MEDIUM8

2

8

-

2

1.5

2.0
GHz

-

SA1.LARGE8

4

8

-

4

1.5

2.0
GHz

-

SA1.LARGE16

4

16

-

4

1.5

2.0
GHz

-

SA1.2XLARGE16

8

16

-

8

1.5

2.0
GHz

-

SA1.2XLARGE32

8

32

-

8

1.5

SA1.4XLARGE32

16

32

-

16

1.5

2.0
GHz

-

SA1.4XLARGE64

16

64

-

16

1.5

2.0
GHz

-

2.0
GHz

-

Note:
In the "SA1 Instances Specification List", "-" in the Send/Receive Packets column indicates that, for this specification,
the network packet rate and server CPU performance are not guaranteed. If you have strict requirement on theperformance, please choose models with performance guarantee.

Standard Network Optimized S2ne
Standard Network Optimized S2ne instances are the best choice for applications that require sending and receiving
massive network packets. They support sending and receiving up to millions of network packets per second. This
family is recommended for businesses with high network PPS requirements, such as large game servers, videos, andlive streaming.
Note:
This instance type is currently only available to beta users. Contact your account manager if you wish to purchasethese instance type.
FeaturesIntel Xeon E5-2680 Broadwell (v4) processors with base frequency of 2.4 GHz and DDR4 memory, offering stablecomputing performance.
Up to 48 cores and 192 GB are available for sale.

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Supported CPU/RAM ratios: 1:2 and 1:4.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Support all types of cloud disks.
Application Scenarios
Scenarios that require sending and receiving massive network packets, such as game services, video services, andfinancial analysis.
Enterprise applications of different types and sizes.
Requirements
Supports pay-as-you-go.
Supports only VPC.
See below for available S2ne specifications:

Specification

vCPU

Memory(GB)

Throughput(pps)(received
and sent

Numberofqueuespackets)

Privatenetwork
bandwidth(Gbps)(outbound

CPU
clock
rate

Notes

and
inbound)

S2ne.SMALL21

2120,000

1

1.5

2.4
GHz

-

S2ne.MEDIUM42

4150,000

2

1.5

2.4
GHz

-

S2ne.LARGE848300,000

2

1.5

2.4
GHz

-

S2ne.LARGE164

16300,000

2

1.5

2.4
GHz

-

S2ne.2XLARGE168

16600,000

2

2.0

2.4
GHz

-

S2ne.2XLARGE32

8

32

600,000

2

2.0

2.4
GHz

-

S2ne.3XLARGE24

12

24

900,000

3

2.5

2.4
GHz

-

S2ne.3XLARGE48

12

48

900,000

3

2.5

2.4

-

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Cloud Virtual MachineGHz
S2ne.4XLARGE32

16

32

1,200,000

4

3.5

2.4
GHz

-

S2ne.4XLARGE64

1664

1,200,000

4

3.5

2.4
GHz

-

S2ne.6XLARGE48

24

48

1,800,000

6

5.0

2.4
GHz

-

S2ne.6XLARGE96

24

96

1,800,000

6

5.0

2.4
GHz

-

S2ne.8XLARGE64

32

64

2,400,000

8

6.5

2.4
GHz

-

S2ne.8XLARGE128

32

128

2,400,000

8

6.5

S2ne.12XLARGE192

48

192

3,600,000

12

9.5

2.4

-

GHz
2.4

-

GHz

Standard S2Standard S2 instances are a relatively new generation of instances. This family provides a balance of computing,memory, and network resources, and it is a good choice for many applications.
Standard S2 instances are equipped with Intel® Xeon® Broadwell processors with DDR4 memory.
FeaturesIntel Xeon E5-2680 Broadwell (v4) processors with base frequency of 2.4 GHz and DDR4 memory.
Up to 56 cores and 224 GB are available for sale.
Supported CPU/RAM ratios: 1:2 and 1:4.
Balance of computing, memory, and network resources.
Application Scenarios
This family is used for small and mid-size databases, data processing tasks that require additional memory and cache
fleets, and for running backend servers for SAP, Microsoft SharePoint, cluster computing and other enterpriseapplications.
Requirements
S2 instances are pay-as-you-go, and can also be used as production instances of standard host HS20 in CDHs.
S2 instances can be launched in classic network and VPCs.

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See below for available S2 instance specifications. Make sure that the instance specification you choose meets theminimum CPU and memory requirements of your operating system and applications. In many cases, GUI operating
systems (such as Windows) that consume extensive memory and CPU resources may need higher specifications. As
the needs of your workload for memory and CPU increase, you can choose higher configurations or other instancetypes.
PrivateSpecification

vCPU

Memory(GB)

Throughput(pps)(received
and sent
packets)

S2.SMALL11

1200,000

1S2.SMALL21

2200,000

S2.SMALL4

1

4

S2.MEDIUM22

S2.MEDIUM4

CPU
clock
rate

Notes

1.5

2.4
GHz

-

1

1.5

2.4
GHz

-

200,000

1

1.5

2

250,000

2

1.5

2

4

250,000

2

1.5

2.4
GHz

-

S2.MEDIUM82

8250,000

2

1.5

2.4
GHz

-

S2.LARGE848450,000

4

1.5

2.4
GHz

-

S2.LARGE164

16450,000

4

1.5

2.4
GHz

-

S2.2XLARGE168

16500,000

8

1.5

2.4
GHz

-

S2.2XLARGE32

8

32

500,000

8

1.5

2.4
GHz

-

S2.3XLARGE24

12

24

500,000

8

2.5

2.4
GHz

-

©2013-2022 Tencent Cloud. All rights reserved.

Numberofqueuesnetwork
bandwidth(Gbps)(outboundandinbound)

2.4
GHz
2.4
GHz

-

-

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Cloud Virtual Machine

S2.3XLARGE48

12

48

500,000

8

2.5

2.4
GHz

-

S2.4XLARGE32

16

32

500,000

8

3.0

2.4
GHz

-

S2.4XLARGE64

16

64

500,000

8

3.0

2.4
GHz

-

S2.6XLARGE48

24

48

700,000

8

4.5

2.4
GHz

-

S2.6XLARGE96

24

96

700,000

8

4.5

2.4
GHz

-

S2.8XLARGE64

32

64

700,000

8

6.0

2.4
GHz

-

S2.8XLARGE128

32

128

700,000

8

6.0

S2.14XLARGE224

56

224

700,000

8

10.0

2.4

-

GHz
2.4

-

GHz

Standard S1Standard S1 instances offer a range of CPUs from low to high core count. They deliver significant savings with flexible
configuration options to meet diverse needs. They also offer a range of data disk options, including local disks and
SSD cloud disks. (Options may vary depending on hardware specifications).
Features
Standard S1 instances have the following features:
Offer a range of CPUs from low to high core count for flexible configuration options.
Intel Xeon CPUs and DDR3 memories.
Support storage options of local disks and SSD cloud disks.
Balance of computing, memory, and network resources.
Application Scenarios
Standard S1 instances are suitable for large, medium, and small-sized applications and databases.
Requirements
S1 instances are pay-as-you-go, and can also be used as production instances of standard host in CDHs.
S1 instances can be launched in classic network and VPCs.

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Cloud Virtual Machine"-" indicates that, for this specification, the network packet rate and server CPU performance are not guaranteed. If
you have strict requirement on the performance, please choose models with performance guarantee.
See below for available S1 instance specifications. Make sure that the instance specification you choose meets theminimum CPU and memory requirements of your operating system and applications. In many cases, GUI operating
systems (such as Windows) that consume extensive memory and CPU resources may need higher specifications. As
the needs of your workload for memory and CPU increase, you can choose higher configurations or other instancetypes.

Throughput

Numberofqueuesbandwidth(Gbps)(outboundand inbound)

CPU
clock
rate

Notes

Specification

vCPU

Memory(GB)

S1.SMALL1

1

1

-

1

1.5

-

-

S1.SMALL2

1

2

-

1

1.5

-

-

S1.SMALL4

1

4

-

1

1.5

-

-

S1.MEDIUM2

2

2

-

2

1.5

-

-

S1.MEDIUM4

2

4

-

2

1.5

-

-

S1.MEDIUM8

2

8

-

2

1.5

-

-

S1.MEDIUM12

2

12

-

2

1.5

-

-

S1.LARGE4

4

4

-

4

1.5

-

-

S1.LARGE8

4

8

-

4

1.5

-

-

S1.LARGE16

4

16

-

4

1.5

-

-

S1.2XLARGE8

8

8

-

8

2.0

-

-

S1.2XLARGE16

8

16

-

8

2.0

-

-

S1.2XLARGE32

8

32

-

8

2.0

-

-

S1.3XLARGE24

12

24

-

8

2.5

-

-

S1.3XLARGE48

12

48

-

8

2.5

-

-

S1.4XLARGE16

16

16

-

8

3.5

-

-

S1.4XLARGE32

16

32

-

8

3.5

-

-

©2013-2022 Tencent Cloud. All rights reserved.

(pps)(received andsent packets)

Privatenetwork

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S1.4XLARGE48

16

48

-

8

3.5

-

-

S1.4XLARGE64

16

64

-

8

3.5

-

-

S1.6XLARGE48

24

48

-

8

5.0

-

-

S1.8XLARGE64

32

64

-

8

7.0

-

-

S1.12XLARGE96

48

96

-

8

10.0

-

-

Note:
In the S1 instance list, "-" indicates that, for this specification, the send/receive packets and CPU clock rate are notguaranteed. If you have a strict performance requirement, please choose models with performance guarantee.

Memory Optimized Instance Family
This family features a large memory. It is well suited for memory-intensive operations, searches, and applications,such as high-performance databases and distributed in-memory caching.

MEM-optimized M8
The MEM-optimized M8 instance is the latest generation of memory-optimized instances. Based on a newly optimized
virtualization platform, it is designed to deliver fast and stable performance for workloads processing large datasets inmemory. It is the optimal choice for high memory computing applications.
Instance Features
The new generation of Tencent Cloud self-developed Star Lake two-way server is equipped with the Intel Emerald
Rapids processor.
Offers a variety of processor to memory ratios, such as 1:8.
Purchases the same-size memory at the lowest price.
The network performance of instances corresponds to their specifications. Higher specifications result in stronger
network forwarding performance and higher private network bandwidth limits.
Supports the configuration to disable or enable Hyper-Threading.
Supports burst bandwidth.
Note:
Burst bandwidth: The size of private network bandwidth is related to instance specifications, each having its own
maximum private network bandwidth limit. In scenarios where network traffic surges within a short duration, Tencent
Cloud servers offer burst bandwidth processing capabilities. For cloud servers that meet burst conditions, exceedingof the private network bandwidth limit for a short period is allowed, catering to customer business needs.
Supports Jumbo Frames©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Note:
Jumbo frames: Tencent Cloud supports sending Ethernet frames with an 8500-byte payload. Using Jumbo frames
can fully maximize network performance, making it suitable for storage scenarios and other high traffic situations,
thereby enhancing transmission efficiency.
Use Cases
The MEM-optimized M8 instance is highly suitable for the following scenarios:
High-performance databases, distributed memory caching, and other applications that require extensive memory
operations, searches, and computations.
Users who build their own Hadoop clusters or use Redis for gene computing purposes.
Scenarios with high demanding of network packet receive and send processing, such as video danmaku, live
streaming, games, etc.
Instance Requirements
M8 instances can be used as monthly subscription instances as well as pay-as-you-go billing instances.
M8 instances can only be launched in a Virtual Private Cloud.
It is recommended to pair with the TencentOS Server operating system for optimal application performance of theinstance.
Refer to the specifications below to see the sizes of M8 instances available for purchase. Ensure the size of the M8
instance you choose meets the minimum CPU and memory requirements of your operating system and application. In
many use cases, operating systems with GUIs that consume a lot of memory and CPU resources (such as Windows)
may need larger instance sizes. As your workload's memory and CPU needs increase over time, you can scale tohigher configurations or choose other types of instances.
Depends on the support from the instance's operating system kernel version and runtime environment. When PPS
exceeds 10 million and the bandwidth exceeds 50 Gbps, the kernel protocol stack can cause significant network
performance loss. In such cases, the bandwidth values tested by netperf may not meet expectations. The DPDK
method can be used to overcome the differences in the cloud server's kernel protocol stack, getting the instance's real
network performance. For testing methods, see high-throughput network performance testing.
Network
PacketReceiveand Send(pps)(Outbound+ Inbound)Number ofConnections

NumberofQueuesStandard
Bandwidth/Burst
Bandwidth(Gbps)(Outbound +Inbound)

C
B
S
S
B
(G

Specification

vCPU

Memory(GB)

M8.MEDIUM162

16400,000

250,0002

1.5/102

M8.LARGE32

4

32

800,000

250,000

4

2/10

2

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Cloud Virtual Machine

M8.2XLARGE64

864

1,400,000

500,000

8

4/10

4

M8.4XLARGE128

16

128

3,200,000

1,100,000

16

9/10

6

M8.8XLARGE256

32

256

6,400,000

2,200,000

32

17/25

1

M8.16XLARGE512

64

512

12,800,000

4,500,000

48

34

2

MEM-optimized MA5
The MEM-optimized MA5 instance is the latest generation of memory-optimized instances. Based on a newly
optimized virtualization platform, it is designed to deliver fast and stable performance for workloads processing large
datasets in memory. It is the optimal choice for high memory computing applications.
Instance Features
The new generation of Tencent Cloud self-developed Star Lake two-way server is equipped with the AMD EPYC™
Bergamo processor.
Offers a variety of processor to memory ratios, such as 1:8.
Purchases the same-size memory at the lowest price.
The network performance of instances corresponds to their specifications. Higher specifications result in stronger
network forwarding performance and higher private network bandwidth limits.
Supports the configuration to disable or enable Hyper-Threading.
Supports burst bandwidth.
Note:
Burst bandwidth: The size of private network bandwidth is related to instance specifications, each having its own
maximum private network bandwidth limit. In scenarios where network traffic surges within a short duration, Tencent
Cloud servers offer burst bandwidth processing capabilities. For cloud servers that meet burst conditions, exceedingof the private network bandwidth limit for a short period is allowed, catering to customer business needs.
Supports Jumbo Frames
Note:
Jumbo frames: Tencent Cloud supports sending Ethernet frames with an 8500-byte payload. Using Jumbo frames
can fully maximize network performance, making it suitable for storage scenarios and other high traffic situations,
thereby enhancing transmission efficiency.
Use Cases
The MEM-optimized MA5 instance is highly suitable for the following scenarios:
High-performance databases, distributed memory caching, and other applications that require extensive memory
operations, searches, and computations.
Users who build their own Hadoop clusters or use Redis for gene computing purposes.

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Cloud Virtual Machine

Scenarios with high demanding of network packet receive and send processing, such as video danmaku, live
streaming, games, etc.
Instance Requirements
MA5 instances can be used as monthly subscription instances as well as pay-as-you-go billing instances.
MA5 instances can only be launched in a Virtual Private Cloud.
It is recommended to pair with the TencentOS Server operating system for optimal application performance of theinstance.
Refer to the specifications below to see the sizes of MA5 instances available for purchase. Ensure the size of the MA5
instance you choose meets the minimum CPU and memory requirements of your operating system and application. In
many use cases, operating systems with GUIs that consume a lot of memory and CPU resources (such as Windows)
may need larger instance sizes. As your workload's memory and CPU needs increase over time, you can scale tohigher configurations or choose other types of instances.
Depends on the support from the instance's operating system kernel version and runtime environment. When PPS
exceeds 10 million and the bandwidth exceeds 50 Gbps, the kernel protocol stack can cause significant network
performance loss. In such cases, the bandwidth values tested by netperf may not meet expectations. The DPDK
method can be used to overcome the differences in the cloud server's kernel protocol stack, getting the instance's real
network performance. For testing methods, see high-throughput network performance testing.

Specification

vCPU

Memory(GB)

Network
PacketReceiveand Send(pps)(OutboundNumber ofConnections

NumberofQueues+ Inbound)Standard
Bandwidth/Burst
Bandwidth

C
B
S(Gbps)(Outbound +Inbound)S
B(

MA5.LARGE32

4

32

300,000

250,000

4

1.5/101

MA5.2XLARGE64

8

64

700,000

250,000

8

3/10

2

MA5.4XLARGE128

16

128

1,400,000

500,000

16

5/10

2

MA5.8XLARGE256

32

256

2,800,000

1,000,000

32

10/25

3

MA5.16XLARGE512

64

512

5,600,000

2,000,000

48

20/25

4

MEM-optimized MA4
The MEM-optimized MA4 instance is the latest generation of memory-optimized instances. Based on a newly
optimized virtualization platform, it is designed to deliver fast and stable performance for workloads processing large
datasets in memory. It is the optimal choice for high memory computing applications.

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Instance Features
The new generation of Tencent Cloud self-developed Star Lake two-way server is equipped with the AMD EPYC™
Genoa processor.
Offers a variety of processor to memory ratios, such as 1:8.
Purchases the same-size memory at the lowest price.
The network performance of instances corresponds to their specifications. Higher specifications result in stronger
network forwarding performance and higher private network bandwidth limits.
Supports the configuration to disable or enable Hyper-Threading.
Use Cases
The MEM-optimized MA4 instance is highly suitable for the following scenarios:
High-performance databases, distributed memory caching, and other applications that require extensive memory
operations, searches, and computations.
Users who build their own Hadoop clusters or use Redis for gene computing purposes.
Scenarios with high demanding of network packet receive and send processing, such as video danmaku, live
streaming, games, etc.
Instance Requirements
MA4 instances can be used as monthly subscription instances as well as pay-as-you-go billing instances.
MA4 instances can only be launched in a Virtual Private Cloud.
It is recommended to pair with the TencentOS Server operating system for optimal application performance of theinstance.
Refer to the specifications below to see the sizes of MA4 instances available for purchase. Ensure the size of the MA4
instance you choose meets the minimum CPU and memory requirements of your operating system and application. In
many use cases, operating systems with GUIs that consume a lot of memory and CPU resources (such as Windows)
may need larger instance sizes. As your workload's memory and CPU needs increase over time, you can scale tohigher configurations or choose other types of instances.
Depends on the support from the instance's operating system kernel version and runtime environment. When PPS
exceeds 10 million and the bandwidth exceeds 50 Gbps, the kernel protocol stack can cause significant network
performance loss. In such cases, the bandwidth values tested by netperf may not meet expectations. The DPDK
method can be used to overcome the differences in the cloud server's kernel protocol stack, getting the instance's real
network performance. For testing methods, see high-throughput network performance testing.
Specification

vCPU

Memory(GB)

Throughput(pps)(received
and sent
packets)©2013-2022 Tencent Cloud. All rights reserved.

Number ofconnections

NumberofqueuesPrivatenetwork
bandwidth(Gbps)

Cloud
Block
StoragStand(outboundandinbound)

Bandw
(Gbps

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Cloud Virtual Machine

MA4.LARGE32

4

32

400,000

250,000

4

1.5

2

MA4.2XLARGE64

8

64

900,000

300,000

82

2.5

MA4.4XLARGE128

16

128

1,800,000

600,00016

4

3

MA4.8XLARGE256

32

256

3,700,000

1,300,000

32

8

4

MA4.16XLARGE512

64

512

7,500,000

2,600,000

48

17

6

MEM-optimized MA3
The MEM-optimized MA3 instance is the latest generation of memory-optimized instances. Based on a newly
optimized virtualization platform, it is designed to deliver fast and stable performance for workloads processing large
datasets in memory. It is the optimal choice for high memory computing applications.
Instance Features
The new generation of Tencent Cloud self-developed Star Lake two-way server is equipped with the AMD EPYC™
Milan processor.
Offers a variety of processor to memory ratios, such as 1:8.
Purchases the same-size memory at the lowest price.
The network performance of instances corresponds to their specifications. Higher specifications result in stronger
network forwarding performance and higher private network bandwidth limits.
Supports the configuration to disable or enable Hyper-Threading.
Use Cases
The MEM-optimized MA3 instance is highly suitable for the following scenarios:
High-performance databases, distributed memory caching, and other applications that require extensive memory
operations, searches, and computations.
Users who build their own Hadoop clusters or use Redis for gene computing purposes.
Scenarios with high demanding of network packet receive and send processing, such as video danmaku, live
streaming, games, etc.
Instance Requirements
MA3 instances can be used as monthly subscription instances as well as pay-as-you-go billing instances.
MA3 instances can only be launched in a Virtual Private Cloud.
It is recommended to pair with the TencentOS Server operating system for optimal application performance of theinstance.
Refer to the specifications below to see the sizes of MA3 instances available for purchase. Ensure the size of the MA3
instance you choose meets the minimum CPU and memory requirements of your operating system and application. In©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

many use cases, operating systems with GUIs that consume a lot of memory and CPU resources (such as Windows)
may need larger instance sizes. As your workload's memory and CPU needs increase over time, you can scale tohigher configurations or choose other types of instances.

Specification

vCPU

Memory(GB)

Throughput(pps)(received

NumberofPrivatenetwork
bandwidth(Gbps)and sent
packets)queues(outboundandinbound)CPU
clock rate

Notes

MA3.SMALL81

8250,000

1

1.5

2.55GHz-

MA3.MEDIUM162

16300,000

2

1.5

2.55GHz-

MA3.LARGE32

4

32

500,000

4

2

2.55GHz-MA3.2XLARGE64

8

64

800,000

8

4

2.55GHz-MA3.4XLARGE128

16

128

1,500,000

1672.55GHz-

MA3.8XLARGE256

32

256

2,500,00032

142.55GHz-

Memory Optimized M6
As the latest generation of memory optimized instances, M6 instances are powered by an all-new optimized
virtualization platform and designed to deliver fast and stable performance for workloads that process large data setsin memory. They are ideal for applications that require high in-memory computing performance.
FeaturesA new-generation Star Lake two-way server developed by Tencent Cloud, with the 3rd generation Intel® Xeon®
scalable processor.
Intel® Xeon® Ice Lake processor, with a CPU clock rate of 2.7 GHz and a turbo frequency of 3.3 GHz.
Intel® Optane™ persistent memory for much better cloud database performance and significantly improved memory
capacity and write performance.
CPU/RAM ratio 1:8.
Lowest price per GB of memory among instance types.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Use Cases
These instances are ideal for:©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Applications that require memory-intensive operations, searches, and computations, such as high-performancedatabases and distributed in-memory caching.
External Hadoop clusters or Redis for fields such as computational genomics.
Scenarios that require sending and receiving massive network packets, such as video on-screen comments, live
video broadcasting, and gaming.
Requirements
Supports pay-as-you-go.
Supports only VPC.
See below for available M6 specifications:

Specification

vCPU

Memory(GB)

Throughput(pps)(received
and sent
packets)

Number ofconnections

NumberofPrivatenetwork
bandwidth(Gbps)

queues(outboundandinbound)

CPU
clock
rate

M6.SMALL81

8250,000

250,000

1

1.5

2.7
GHz

M6.MEDIUM162

16300,000

250,000

2

2

2.7
GHz

M6.LARGE32

4

32

600,000

500,000

4

4

2.7
GHz

M6.2XLARGE64

864

1,200,000

1,000,000

8

7

2.7
GHz

M6.4XLARGE128

16

128

2,500,000

2,000,000

16

13

2.7
GHz

M6.8XLARGE256

32

256

5,000,000

4,000,000

32

26

2.7
GHz

M6.16XLARGE512

64

512

10,000,000

8,000,000

48

52

2.7
GHz

M6.31MEDIUM470

62

470

10,000,000

8,000,000

48

50

2.7
GHz

M6.31XLARGE940

124

940

19,000,000

16,000,000

48

100

©2013-2022 Tencent Cloud. All rights reserved.

2.7
GHz

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Security-enhanced Memory Optimized M6ce
As the latest generation of memory optimized instances, M6ce instances are powered by an all-new optimized
virtualization platform and designed to deliver fast and stable performance for workloads that process large data setsin memory. They are ideal for applications that require high in-memory computing performance.
Note:
This instance type is now only available to beta users. Contact your account manager to purchase it.
FeaturesA new-generation Star Lake two-way server developed by Tencent Cloud, with the 3rd generation Intel® Xeon®
scalable processor.
Intel® Xeon® Ice Lake processor, with a CPU clock rate of 2.7 GHz and a turbo frequency of 3.3 GHz.
Intel® SGX encrypted computing, with a single instance containing up to 428 GB encrypted memory, ensuring theconfidentiality and security of critical data and codes.
The processor-to-memory ratio is 1: 8. The encrypted memory accounts for about 50% of the memory.
Lowest price per GB of memory among instance types.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Use Cases
These instances are ideal for:
Data sharing and computing, protecting confidential data shared between different users or vendors.
Blockchain applications, enhancing the privacy and security of transactions and key storage, etc.
Scenarios with high security and reliability requirements, such as finance, government agencies, medical care, etc.
Confidential computing scenarios and data encryption applications.
Requirements
Supports pay-as-you-go.
Supports only VPC.
See below for available M6ce specifications:Note:
If you use the key bound to hardware to encrypt data (such as SGX Sealing) in Intel SGX Enclave, you cannot decrypt
the corresponding data once the host changes in the following scenarios. It is recommended that you back up data in
the application layer to ensure the application reliability. Scenarios such as host failure, adjustment of instance types,
no charges when shutdown, modification of instance placement group, etc., may lead to host changes.
For more information on how to use security-enhanced memory optimized M6ce instances, see Building an SGX
Confidential Computing Environment.
Specification

vCPU

Memory(GB)©2013-2022 Tencent Cloud. All rights reserved.

Encrypted
memoryThroughput(pps)

Number ofconnections

NumberofPrivatnetwo

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Cloud Virtual Machine(GB)(received
and sent

queuespackets)

bandw
(Gbps
(outboandinbou

M6ce.MEDIUM16

2

16

8

300,000

250,000

2

2

M6ce.LARGE32

4

32

16

600,000

500,000

4

4

M6ce.2XLARGE64

8

64

32

1,200,000

1,000,000

87M6ce.4XLARGE128

16

128

64

2,500,000

2,000,000

16

13

M6ce.8XLARGE256

32

256

128

5,000,000

4,000,000

32

26

M6ce.31MEDIUM428

62

428

214

10,000,000

8,000,000

48

50

M6ce.31XLARGE856

124

856

428

19,000,000

8,000,000

48

100

Memory Optimized M5
As the latest generation of memory optimized instances, M5 instances are powered by an all-new optimized
virtualization platform and designed to deliver fast and stable performance for workloads that process large data setsin memory. They are ideal for applications that require high in-memory computing performance.
FeaturesIntel® Xeon® Cascade Lake or Intel® Xeon® Cooper Lake processor, with a CPU clock rate of 2.5 GHz and turbo
frequency of 3.1 GHz.
New Intel Advanced Vector Extension (AVX-512) instruction set.
CPU/RAM ratio 1:8.
Lowest price per GB of memory among instance types.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Supports the configuration to disable or enable Hyper-Threading.
Application Scenarios
These instances are ideal for:Applications that require memory-intensive operations, searches, and computations, such as high-performancedatabases and distributed in-memory caching.
Self-built Hadoop clusters or Redis for fields such as computational genomics.
Scenarios that require massive send/receive packets, such as on-screen comments, live video broadcasting, andgaming.

©2013-2022 Tencent Cloud. All rights reserved.

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Requirements
Supports pay-as-you-go.
Supports only VPC.
See below for available M5 specifications:
PrivateThroughput(pps)(received
and sent
packets)

Number ofconnections

Numberofqueuesnetwork
bandwidth(Gbps)(outboundandinbound)

CPU
clock
rate

Specification

vCPU

Memory(GB)

M5.SMALL81

8250,000

250,000

1

1.5

2.5GHz

M5.MEDIUM162

16300,000

250,000

2

1.5

2.5GHz

M5.LARGE32

4

32

500,000

250,000

2

1.5

2.5GHzM5.2XLARGE64

8

64

800,000

250,000

2

3.0

2.5GHzM5.3XLARGE96

1296

1,000,000

250,000

3

5.0

2.5GHzM5.4XLARGE128

16

128

1,500,000

300,000

4

6.0

2.5GHzM5.8XLARGE256

32

256

2,500,000

600,000

8

12.0

2.5GHzM5.16XLARGE512

64

512

5,000,000

1,200,000

16

23.0

2.5GHzMemory Optimized MA2
As the latest generation of memory optimized instances, MA2 instances are powered by an all-new optimized
virtualization platform and designed to deliver fast and stable performance for workloads that process large data setsin memory. They are ideal for applications that require high in-memory computing performance.
Features
Provides high performance with high reliability, security, and stability based on the Star Lake servers developed byTencent Cloud.
Comes with AMD EPYC™ ROME processor, with a CPU clock rate of 2.6 GHz and turbo frequency of 3.3 GHz.
CPU/RAM ratio 1:8.
Lowest price per GB of memory among instance types.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Use Cases
Memory Optimized MA2 instances are applicable to the following scenarios:
Applications that require extensive memory operations, searches, and computing, such as high-performancedatabases and distributed memory caching.
External Hadoop clusters or Redis for fields such as computational genomics.
Scenarios that require sending and receiving massive network packets, such as video on-screen comments, live
video broadcasting, and gaming.
Requirements
Supports pay-as-you-go.
Supports only VPC.
See below for available MA2 specifications:

Number ofconnections

NumberofqueuesPrivatenetwork
bandwidth(Gbps)(outboundandinbound)Specification

vCPU

Memory(GB)

Throughput(pps)(received
and sent
packets)

MA2.SMALL81

8250,000

250,000

1

1.5

2.6GH

MA2.LARGE32

4

32

500,000

250,000

4

1.5

2.6GH

MA2.2XLARGE64

8

64

700,000

250,000

8

1.5

2.6GH

MA2. 2XLARGE3848

384

700,000

250,000

8

1.5

2.6GH

MA2.4 XLARGE128

16

128

1,000,000

300,000

16

3

2.6GH

MA2.8 XLARGE256

32

256

1,400,000

700,000

32

5

2.6GH

MA2.12XLARGE384

48

384

2,100,000

1,000,000

48

7

2.6GH

CPU
clock
rate

Memory Optimized M4
M4 instances are designed to deliver fast performance for workloads that process large data sets in memory. They are
ideal for applications that require high in-memory computing performance.
As a new generation of memory optimized instances, M4 instances come with new Xeon® Skylake processors withthe latest DDR4 memory. They are network optimized by default, offering a private network throughput up to
6,000,000 pps, and support for ultra-high private network bandwidth.
Application Scenarios©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

These instances are an ideal choice for:Applications that require extensive memory operations, searches, and computations, such as high-performancedatabases and distributed memory caching.
Users who build their own Hadoop clusters or Redis to use in fields such as computational genomics.
Scenarios that require sending and receiving massive network packets, such as video on-screen comments, live
video broadcasting, and gaming.
Features
2.4 GHz Intel® Xeon® Skylake 6148 processor, offering stable computing performance.
New Intel Advanced Vector Extension (AVX-512) instruction set.
The latest generation of 6-channel DDR4 memory with a bandwidth of 2,666 MT/s.
Higher specification, M4.16XLARGE512, offering 64 vCPUs and 512 GB memory.
Supported CPU/RAM ratios: 1:8 and 1:12.
Priced lower than any other memory-optimized instances with the same memory.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Requirements
Supports pay-as-you-go.
Supports only VPC.
See below for available M4 specifications:Throughput(pps)(received
and sent
packets)

NumberofqueuesPrivatenetwork
bandwidth(Gbps)(outboundandinbound)

CPU
clock
rate

Notes

Specification

vCPU

Memory(GB)

M4.SMALL81

8250,000

1

1.5

2.4GHz

-M4.MEDIUM162

16300,000

2

1.5

2.4GHz

-M4.LARGE32

4

32

500,000

2

1.5

2.4GHz-M4.2XLARGE64

8

64

800,000

2

3.0

2.4GHz-M4.3XLARGE96

1296

1,000,000

3

4.0

2.4GHz-M4.3XLARGE144

12

144

1,000,000

3

4.0

2.4GHz-M4.4XLARGE128

16

128

1,500,000

4

6.0

2.4GHz-©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

M4.4XLARGE192

16

192

1,500,000

4

6.0

2.4GHz-M4.8XLARGE256

32

256

2,500,000

8

11.0

2.4GHz-M4.8XLARGE384

32

384

2,500,000

8

11.0

2.4GHz-M4.16XLARGE512

64

512

5,000,000

16

22.0

2.4GHz-M4.18XLARGE648

72

648

6,000,000

16

24.0

2.4GHz-Memory Optimized M3
M3 instances are designed to deliver fast performance for workloads that process large data sets in memory. They are
ideal for applications that require high in-memory computing performance.
M3 instances are powered by new Intel® Xeon® Skylake processors with the latest DDR4 memory, and support up to
10 Gbps of private network bandwidth.
Application Scenarios
These instances are an ideal choice for:Applications that require extensive memory operations, searches, and computations, such as high-performancedatabases and distributed memory caching.
Users who build their own Hadoop clusters or Redis to use in fields such as computational genomics.
Features
2.5 GHz Intel® Xeon® Skylake 6133 processor, offering stable computing performance.
The latest generation of 6-channel DDR4 memory with a bandwidth of 2,666 MT/sec.
Higher specification, M3.16XLARGE512, offering 64 vCPUs and 512 GB memory.
Supported CPU/RAM ratios: 1:8 and 1:12.
Priced lower than any other memory-optimized instances with the same memory.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Requirements
Supports pay-as-you-go.
Supports both classic network and VPC.
See below for available M3 specifications:
Specification

vCPU

Memory(GB)

Throughput(pps)(received
and sent
packets)©2013-2022 Tencent Cloud. All rights reserved.

NumberofqueuesPrivatenetwork
bandwidth(Gbps)

CPU
clock
rate

Notes

(outbound

Page 67 of 191

Cloud Virtual Machineandinbound)
M3.SMALL81

8300,000

1

1.5

2.5
GHz

-

M3.MEDIUM162

16400,000

2

1.5

2.5
GHz

-

M3.LARGE32

4

32

800,000

4

1.5

2.5
GHz

-

M3.2XLARGE64

864

1,200,0008

1.5

2.5GHz-M3.3XLARGE96

1296

1,200,000

12

1.5

2.5
GHz

-

M3.3XLARGE144

12

144

1,200,000

12

1.5

2.5
GHz

-

M3.4XLARGE128

16

128

1,200,000

16

2.0

2.5
GHz

-

M3.4XLARGE192

16

192

1,200,000

16

2.0

2.5
GHz

-

M3.8XLARGE256

32

256

1,200,000

16

4.0

2.5
GHz

-

M3.8XLARGE384

32

384

1,200,000

16

4.0

2.5
GHz

-

M3.16XLARGE512

64

512

1,200,000

16

8.0

2.5
GHz

-

Memory Optimized M2
M2 instances are designed to deliver fast performance for workloads that process large data sets in memory. They
feature a large memory, making them ideal for applications that require high in-memory computing performance.
Application Scenarios
These instances are ideal for:Applications that require extensive memory operations, searches, and computations, such as high-performancedatabases and distributed memory caching.
Users who build their own Hadoop clusters or Redis to use in fields such as computational genomics.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Features
2.4 GHz Intel® Xeon® E5-2680v4 processor with DDR4 memory.
Memory of up to 448 GB is available. The M2.14XLARGE448 model offers 56 vCPUs and 448 GB memory.
CPU/RAM ratio 1:8.
Priced lower than any other memory-optimized instances with the same memory.
Requirements
M2 instances are pay-as-you-go. They can also be used as production instances of memory optimized host HM20 in
CDHs.
Supports only VPC.
See below for available M2 specifications:Throughput(pps)(received andsent packets)

NumberofqueuesPrivatenetwork
bandwidth(Gbps)(outboundandinbound)

CPU
clock
rate

Notes

2.4
GHz

-

Specification

vCPU

Memory(GB)

M2.SMALL81

8200,000

1

1.5

M2.MEDIUM162

16250,000

2

1.5

M2.LARGE32

4

32

450,000

4

1.5

2.4
GHz

-

M2.2XLARGE64

8

64

500,000

8

1.5

2.4
GHz

-

M2.3XLARGE96

12

96

500,000

8

2.5

2.4
GHz

-

M2.4XLARGE128

16

128

500,000

8

3.0

2.4
GHz

-

M2.6XLARGE192

24

192

700,000

8

4.5

2.4GHz-M2.8XLARGE256

32

256

700,000

8

6.0

2.4GHz-M2.12XLARGE384

48

384

700,000

8

9.0

2.4GHz-M2.14XLARGE448

56

448

700,000

8

10.0

2.4GHz-©2013-2022 Tencent Cloud. All rights reserved.

2.4

-

GHz

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Cloud Virtual Machine

Memory Optimized M1
M1 instances come with approximately 1:8 CPU to memory ratio. They are well suited for applications that require
memory-intensive operations, searches, and computations, such as high-performance databases and distributed inmemory caching.
Features
2.3 GHz Intel Xeon® E5-2670 v3 processor with DDR3 memory, providing more instance sizes with stronger
computing capacities.
Golden CPU to memory ratio for memory-intensive applications, satisfying the needs for large-scale businessdeployment.
Application Scenarios
These instances are ideal for:Applications that require memory-intensive operations, searches, and computations, such as high-performancedatabases and distributed in-memory caching.
Self-built Hadoop clusters or Redis for fields such as computational genomics.
Requirements
Supports pay-as-you-go.
Supports both classic network and VPC.
In the M1 instance list, "-" indicates that, for this specification, the send/receive packets and CPU clock rate are notguaranteed. If you have a strict performance requirement, please choose models with performance guarantee.
See below for available M1 specifications:

Specification

vCPU

Memory(GB)

Throughput(pps)(received
and sent
packets)

NumberofqueuesPrivatenetwork
bandwidth(Gbps)(outbound
and

CPU
clock
rate

Notes

inbound)
M1.SMALL8

1

8

-

1

1.5

2.3GHz

-M1.MEDIUM16

2

16

-

2

1.5

2.3GHz

-M1.LARGE32

4

32

-

4

1.5

2.3GHz-M1.2XLARGE64

8

64

-

8

2.0

2.3GHz-M1.3XLARGE96

12

96

-

8

2.5

2.3GHz-M1.4XLARGE128

16

128

-

8

3.5

2.3GHz-©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

M1.6XLARGE192

24

192

-

8

5.0

2.3GHz-M1.8XLARGE256

32

256

-

8

7.0

2.3GHz-M1.12XLARGE368

48

368

-

8

10.0

2.3GHz-Note:
In the M1 instance list, "-" indicates that, for this specification, the send/receive packets and CPU clock rate are notguaranteed. If you have a strict performance requirement, please choose models with performance guarantee.

High I/O Family
This family features high random IOPS, high throughput and low latency, making it suitable for I/O-intensive
applications that require high disk read/write performance and low latency, such as high-performance databases.
Note:

、

ITA5 IT3 and IT5 instances use local disk as the data disk, which may lose data (e.g., when the host crashes). If
your application cannot guarantee data reliability, we recommend you choose an instance that can use cloud disks as
the data disk.

High I/O ITA5
Note:
This instance specification family is in Beta Testing, and we welcome your suggestions and feedback.
High I/O Instance Family
The High I/O ITA5 Instance is the latest generation of high I/O instances designed specifically for I/O-intensive
workloads. Based on NVMe SSD instance storage, it offers low latency, ultra-high IOPS, and high throughput storage
resources at a lower cost. Suitable for high-performance relational databases, Elasticsearch, and other I/O-intensive
services.
Instance Characteristics
The new generation of Tencent Cloud's self-developed StarSea dual-socket server, equipped with the AMD EPYC™
Bergamo processor.
Equipped with AMD EPYC™ Bergamo Processor, Turbo Boost up to 3.1GHz.
Instance network performance is matched to specifications; higher specifications enable stronger network forwarding
performance and higher internal network bandwidth limits.
Utilizing NVMe SSD for instance storage, it provides low latency and ultra-high IOPS.
Application scenario©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

High-performance databases, NoSQL databases (e.g., MongoDB), clustered databases.
Online Transaction Processing (OLTP) systems, Elasticsearch search, and other I/O-intensive applications requiring
low latency.
Instance Requirements
If the local hard disk is damaged, we support online disk replacement operations.
If a cloud server instance has already experienced downtime, we will inform you and proceed with maintenance
operations.
An ITA5 instance not having monitoring components installed means the platform cannot monitor the instance asthoroughly. If the instance fails, normal notifications cannot be sent, Please activate cloud monitoring during
purchasing.
ITA5 instances can be used as annual and monthly subscription instances and on-demand billing instances.
Only in Virtual Private Cloud can ITA5 instances be launched.
ITA5 instances do not support adjusting configuration or the 'shutdown not charged' feature.
ITA5 instances support purchasing configuration; please see the instance specifications below.
The instance supports up to 160G of network bandwidth, depending on the instance kernel version and runningenvironment support. When pps exceeds 10 million and bandwidth is greater than 50Gbps, the kernel protocol stackcauses significant network performance loss. In such cases, the bandwidth measured by netperf testing may not meet
expectations. The DPDK method can be used to shield the differences of the cloud service kernel protocol stack,accessing the true network performance of the instance. For testing methods, please refer to High-throughput network
performance testing.
PrivateNetwork
Standard/Burst

Specification

vCPU

Memory(GB)

Network
packettransmission(pps)(Outbound +Inbound)

ITA5.4XLARGE64

1664

1.4 million

500,000

16

5/10

ITA5.8XLARGE128

32

128

2.8 million

1 million

32

10/25

©2013-2022 Tencent Cloud. All rights reserved.

Number ofconnections

Queue
count

Bandwidth(Gbps)(Outbound +Inbound)Page 72 of 191

Cloud Virtual Machine

ITA5.16XLARGE256

64

256

5.6 million

2 million

48

20/25

ITA5.32XLARGE512

128

512

11.2 million

4 million

48

40/-

ITA5.64XLARGE1024

256

1024

22.5 million

8 million

48

80/-

ITA5.128XLARGE2304

512

2304

45 million

16 million

48

160/-

High I/O IT5
IT5 instances, based on NVMe SSD storage, are designed for I/O-intensive workloads. They come with storage
resources featuring low latency, ultra-high IOPS and high throughput. They offer an IOPS of up to 2.05 million and athroughput of up to 11 GB/s, allowing for an ultra-high IOPS at a low cost. This instance type is suitable for I/Ointensive applications including high-performance relational databases, Elasticsearch, etc.
Application Scenarios
High-performance databases, NoSQL databases (e.g. MongoDB), and clustered databases.
I/O intensive applications that require low latency, such as online transaction processing (OLTP) systems, andElasticsearch.
Features©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

2.5 GHz Intel® Xeon® Cascade Lake processor, offering stable computing performance.
The latest generation of 6-channel DDR4 memory.
Supports up to 23 Gbps of private network bandwidth to meet extremely high private network transmission
requirements.
NVMe SSD is used for instance storage, offering low latency and ultra-high IOPS.
Up to 650,000 random read IOPS (block size of 4 KB), and up to 2.8 GB/s sequential read throughput (block size of
128 KB) for a single disk.
Up to 2.05 million random read IOPS (block size of 4 KB), and up to 11 GB/s sequential read throughput (block size of
128 KB) for a CVM.
Requirements
If the local disk is damaged, you will need to shut down the CVM instance for us to replace the local disk.
If the CVM instance crashes, we will notify you and perform fixes.
If Agent has not been installed, IT5 instances cannot be monitored. You will not receive a notification when the CVM
instance fails, which is very risky. For more information about how to install Agent, see Installing CVM Agents.
Supports pay-as-you-go.
Supports only VPC.
The configuration of IT5 instances cannot be changed.
See below for available IT5 specifications:

Specification

vCPU

Memory(GB)

Throughput(pps)(received
and sent
packets)

NumberofqueuesPrivatenetwork
bandwidth(Gbps)(outboundandinbound)

CPU
clock
rate

Notes

1 x 3570
IT5.4XLARGE64

IT5.8XLARGE128

IT5.16XLARGE256

16

32

64

64

128

256

©2013-2022 Tencent Cloud. All rights reserved.

1,500,000

2,500,000

5,000,000

4

8

16

6

12

23

2.5GHz

GB local
NVMe
SSD

2.5GHz2 x 3570
GB local
NVMe
SSDs

2.5GHz4 x 3570
GB local
NVMe
SSDs

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Cloud Virtual MachineHigh I/O IT3
IT3 instances, based on NVMe SSD storage, are designed for I/O-intensive workloads. They come with storage
resources featuring low latency, ultra-high IOPS and high throughput. They offer an IOPS of up to 1.8 million and athroughput of up to 11 GB/s, allowing for an ultra-high IOPS at a low cost. This instance type is suitable for I/Ointensive applications including high-performance relational databases, Elasticsearch, etc.
IT3 instances feature inexpensive and intensive storage. They can provide each CPU core with higher IOPS andlarger private network bandwidth.
Application Scenarios
High-performance databases, NoSQL databases (e.g. MongoDB), and clustered databases.
I/O intensive applications that require low latency, such as online transaction processing (OLTP) systems, andElasticsearch.
Features
2.5 GHz Intel® Xeon® Skylake 6133 processor, offering stable computing performance.
The latest generation of 6-channel DDR4 memory.
Supports up to 23 Gbps of private network bandwidth to meet extremely high private network transmission
requirements.
NVMe SSD is used for instance storage, offering low latency and ultra-high IOPS.
Up to 620,000 random read IOPS (block size of 4 KB), and up to 2.9 GB/s sequential read throughput (block size of
128 KB) for a single disk.
Up to 1.8 million random read IOPS (block size of 4 KB), and up to 11 GB/s sequential read throughput (block size of
128 KB) for a CVM.
Requirements
If the local disk is damaged, you will need to shut down the CVM instance for us to replace the local disk.
If the CVM instance crashes, we will notify you and perform fixes.
If Agent has not been installed, IT3 instances cannot be monitored. You will not receive a notification when the CVM
instance fails, which is very risky. For more information about how to install Agent, see Installing CVM Agents.
Supports pay-as-you-go.
Supports only VPC.
The configuration of IT3 instances cannot be changed.
See below for available IT3 specifications:
Specification

vCPU

MemoryThroughput

NumberPrivate

CPU

(GB)

(pps)
(received
and sent
packets)ofqueuesnetwork
bandwidth(Gbps)(outbound

clock
rate

©2013-2022 Tencent Cloud. All rights reserved.

Notes

Page 75 of 191

Cloud Virtual Machineandinbound)IT3.4XLARGE64

IT3.8XLARGE128

16

32

64

128

1,500,000

2,500,000

4

8

6

12

2.5GHz

1×
3720
GB
local
NVMe
SSD

2.5GHz

2×
3720
GB
local
NVMe
SSDs
4×

IT3.16XLARGE256

64

256

5,000,000

16

23

2.5GHz

3720
GB
local
NVMe
SSDs

Big Data Family
The big data family is equipped with massive storage resources, features high throughput, and is suitable forthroughput-intensive applications such as Hadoop distributed computing, massive log processing, distributed filesystems, and large data warehouses.
Note:
D3 and D2 instances use local disk as the data disk, which may lose data (e.g., when the host crashes). If yourapplication cannot guarantee data reliability, we recommend you choose an instance that can use cloud disks as thedata disk.

Big Data D3
As the latest generation of big data instances, D3 instances are equipped with massive storage resources, and carry
up to 94 TB SATA HDD local storage, making them suitable for throughput-intensive services, such as Hadoop
distributed computing and parallel data processing.
Application Scenarios
Distributed computing services such as Hadoop MapReduce/HDFS/Hive/HBase.

©2013-2022 Tencent Cloud. All rights reserved.

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Business scenarios such as Elasticsearch, log processing, and large data warehouse.
Internet, finance, and industries that require big data computing and storage analysis, as well as applications that
require massive data storage and computing.
Features
2.5 GHz Intel® Xeon® Cascade Lake processor with DDR4 memory.
Instances carry up to 24 local disks of 4 TB and up to 94 TB of HDD local storage.
At least 190 MB/s sequential read throughput performance for a single disk.
Millisecond read/write latency.
CPU/RAM ratio 1:4, tailored for the big data scenarios.
Requirements
If the local disk is damaged, you will need to shut down the CVM instance for us to replace the local disk.
We will notify you and perform fixes if the CVM instance crashes.
If Agent has not been installed, D3 instances cannot be monitored. You will not receive a notification when the CVM
instance fails, which is very risky. For more information about how to install Agent, see Installing CVM Agents.
Supports pay-as-you-go.
Supports only VPC.
The configuration of D3 instances cannot be changed.
See below for available D3 specifications:Throughput(pps)(received
and sent
packets)

Number ofconnections

NumberofqueuesPrivatenetwork
bandwidth(Gbps)(outboundandinbound)

CPU
clock
rate

Specification

vCPU

Memory(GB)

D3.2XLARGE32

8

32

800,000

250,000

2

4.0

2.5GHz

D3.4XLARGE64

1664

1,500,000

300,000

4

7.0

2.5
GHz

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Cloud Virtual Machine

D3.8XLARGE128

32

128

2,500,000

600,000

8

14.0

2.5
GHz

D3.16XLARGE256

64

256

5,000,000

1,200,000

12

27.0

2.5GHzD3.21XLARGE320

84

320

6,000,000

1,600,000

16

32.0

2.5
GHz

Big Data D2
D2 instances are equipped with massive storage resources, and carry up to 144 TB SATA HDD local storage, making
them suitable for throughput-intensive services, such as Hadoop distributed computing and parallel data processing.
Application Scenarios
Distributed computing services such as Hadoop MapReduce/HDFS/Hive/HBase
Business scenarios such as Elasticsearch, log processing, and large data warehouse.
Internet, finance, and industries that require big data computing and storage analysis, as well as applications that
require massive data storage and computing.
Features
2.4 GHz Intel® Xeon® Skylake 6148 processor with DDR4 memory.
Instances carry up to 12 local disks of 12 TB and up to 144 TB of HDD local storage
For a single disk, the sequential read throughput is 220+ MB/s and sequential write throughput is 220+ MB/s (128 KB
block size and depth of 32)
For the CVM, the throughput can reach up to 2.8 GB/s (block size of 128 KB and queue depth of 32).
Read/write latency is as low as 2-5 ms
Higher specification, D2.19XLARGE320, offering 76 vCPUs and 320 GB of memory.
Local storage with a unit price as low as 1/10 of S2, making its total cost close to that of a self-built Hadoop clusters in
IDC.

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CPU/RAM ratio 1:4, tailored for the big data scenarios.
Requirements
If the local disk is damaged, you will need to shut down the CVM instance for us to replace the local disk.
If the CVM instance crashes, we will notify you and perform fixes.
Supports pay-as-you-go.
Supports only VPC.
The configuration of D2 instances cannot be changed.
See below for available D2 specifications:

Specification

vCPU

Memory(GB)

Throughput(pps)(received
and sent

Numberofqueuespackets)

D2.2XLARGE32

D2.4XLARGE64

D2.6XLARGE96

D2.8XLARGE128

8

16

24

32

32

64

96

128

©2013-2022 Tencent Cloud. All rights reserved.

800,000

1,500,000

2,000,000

2,500,000

Privatenetwork
bandwidth(Gbps)(outbound

CPU
clock
rate

Notes

2.4GHz

1x
11176
GB
local
SATA
HDD

2.4GHz

2x
11176
GB
local
SATA
HDDs

2.4GHz

3x
11176
GB
local
SATA
HDDs

2.4GHz

4x
11176
GB
local
SATA
HDDs

and
inbound)

2

4

6

8

3.0

6.0

8.0

11.0

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D2.16XLARGE256

64

256

5,000,000

16

22.0

2.4GHz

8x
11176
GB
local
SATA
HDDs

D2.19XLARGE320

76

320

6,000,000

16

25.0

2.4GHz

12 x
11176
GB
local
SATA
HDDs

Computing Instance Family
This family provides the highest single-core computing performance with a turbo frequency up to 3.8 GHz. It is
suitable for compute-intensive applications such as batch processing, high performance computing, and dedicatedgame servers.

Compute Optimized C6
As the latest generation of computing instances, C6 instances are powered by an all-new virtualization platform andprovide stable and reliable high-performance computing services for greater bandwidth and lower latency. These
instances have the most powerful processors and the best cost performance among CVMs. They are ideal for
applications that require high computing performance and high-concurrence reads/writes.
C6 instances come with new Intel® Xeon® processors, and support up to 100 Gbps of private network bandwidth.
Note:This instance type is now only available to beta users. Contact your account manager to purchase it.
FeaturesA new-generation Star Lake two-way server developed by Tencent Cloud, with the 3rd generation Intel® Xeon®
scalable processor.
Intel® Xeon® Ice Lake processor, with a CPU clock rate of 3.2 GHz and a turbo frequency of 3.5 GHz.
Supported CPU/RAM ratios: 1:2 and 1:4.
Supports up to 100 Gbps of private network bandwidth, providing ultra-high packet throughput to meet high private
network transmission requirements.
Supports all kinds of cloud disks.
Supports the configuration to disable or enable Hyper-Threading.

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Use Cases
Compute Optimized C6 instances are applicable to the following scenarios:
Batch processing workloads and high performance computing (HPC).
High-traffic Web frontend server.
Other compute-intensive services such as massively multiplayer online (MMO) game servers.
Requirements
Supports pay-as-you-go.
Supports only VPC.
See below for available C6 specifications:Throughput(pps)(received
and sent
packets)

Number ofconnections

NumberofqueuesPrivatenetwork
bandwidth(Gbps)(outboundandinbound)

CPU
clock
rate

Specification

vCPU

Memory(GB)

C6.LARGE84

8800,000

600,000

4

5

3.2
GHz

C6.LARGE164

16800,000

600,000

4

5

3.2
GHz

C6.2XLARGE168

161,600,000

1,300,000

8

9

3.2
GHz

C6.2XLARGE32

8

32

1,600,000

1,300,000

8

9

3.2
GHz

C6.4XLARGE32

16

32

3,300,000

2,700,000

16

18

3.2
GHz

C6.4XLARGE64

16

64

3,300,000

2,700,000

16

18

3.2
GHz

C6.8XLARGE128

32

128

6,600,000

5,500,000

32

35

3.2
GHz

C6.23MEDIUM216

46

216

9,500,000

8,000,000

46

50

3.2
GHz

C6.16XLARGE256

64

256

13,000,000

11,000,000

48

70

3.2
GHz

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Cloud Virtual Machine

C6.20XLARGE320

80

320

16,000,000

13,900,000

48

87

3.2
GHz

C6.23XLARGE432

92

432

19,000,000

16,000,000

48

3.2
GHz

100

Compute Optimized C5
As the latest generation of computing instances, C5 instances are powered by an all-new virtualization platform toprovide stable and reliable high-performance computing services for greater bandwidth and lower latency. These
instances have the most powerful processors and the best cost performance among CVMs. They are ideal for
applications that require high computing performance and high-concurrence reads/writes.
C5 instances come with the latest Xeon® Cooper Lake processors.
Note:
This instance type is now only available to beta users. Contact your account manager to purchase it.
FeaturesIntel® Xeon® Cooper Lake processor, with a base frequency of 3.4 GHz and turbo frequency of 3.8 GHz.
New Intel Brain Floating Point 16-bit (blfoat16) instruction set.
Supported CPU/RAM ratios: 1:2 and 1:4.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Supports all kinds of cloud disks.
Supports the configuration to disable or enable Hyper-Threading.
Application Scenarios
These instances are ideal for:
Batch processing workloads and high performance computing (HPC).
High-traffic Web frontend server.
Other compute-intensive services such as massively multiplayer online (MMO) game servers.
Requirements
Supports pay-as-you-go.
Supports both classic network and VPC.
See below for available C5 specifications:
Specification

vCPU

Memory(GB)©2013-2022 Tencent Cloud. All rights reserved.

Throughput(pps)(received
and sent
packets)

Number ofconnections

NumberofqueuesPrivatenetwork
bandwidth(Gbps)(outbound

CPU
clock
rate

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C5.LARGE84

8500,000

250,000

4

1.5

3.4GHz

C5.LARGE164

16500,000

250,000

4

1.5

3.4GHzC5.2XLARGE168

16800,000

250,000

8

3.0

3.4GHzC5.2XLARGE32

8

32

800,000

250,000

8

3.0

3.4GHzC5.4XLARGE32

16

32

1,500,000

300,000

8

6.0

3.4GHzC5.4XLARGE64

1664

1,500,000

300,000

8

6.0

3.4GHzC5.8XLARGE64

32

642,500,000

600,000

16

12.0

3.4GHzC5.8XLARGE128

32

128

2,500,000

600,000

16

12.0

3.4GHzC5.12XLARGE96

48

96

4,000,000

900,000

24

18.0

3.4GHzC5.12XLARGE192

48

192

4,000,000

900,000

24

18.0

3.4GHzC5.13XLARGE184

52

184

4,000,000

1,000,000

32

19.0

3.4GHzC5.16XLARGE256

64

256

5,000,000

1,200,000

32

24.0

3.4GHzC5.26XLARGE368

104

368

6,000,000

2,000,000

32

36.0

3.4GHzCompute Optimized C4C4 instances have up to 25 Gbps of private network bandwidth for greater bandwidth and lower latency. These
instances have the most powerful processors and the best cost performance among CVMs. They are ideal for
applications that require high computing performance and high-concurrence reads/writes.
C4 instances are equipped with the latest Xeon® Cascade Lake processors, and support up to 25 Gbps of private
network bandwidth.
Use Cases
These instances are an ideal choice for:
Batch processing workloads and high performance computing (HPC).
High-traffic Web frontend server.
Other compute-intensive services such as massively multiplayer online (MMO) game servers.
Features
3.2 GHz Intel® Xeon® Cascade Lake processor, with a turbo frequency 3.7 GHz.

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Cloud Virtual Machine

New Intel Advanced Vector Extension (AVX-512) instruction set.
Supports up to 25 Gbps of private network bandwidth to meet extremely high private network transmission
requirements.
Supported CPU/RAM ratios: 1:2 and 1:4.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Supports all kinds of cloud disks.
Supports the configuration to disable or enable Hyper-Threading.
Requirements
Supports pay-as-you-go.
Supports both classic network and VPC.
See below for available C4 specifications:

Specifications

vCPU

MEM
(GB)

C4.LARGE848

C4.LARGE16

4

C4.2XLARGE16

Throughput(pps)(received andsent packets)

NumberPrivatenetwork
bandwidthCPUofqueues(Gbps)(outboundandinbound)

clock
rate

Notes

600,000

4

2.0

3.2GHz-16

600,000

4

2.0

3.2GHz-816

1,000,000

8

4.0

3.2GHz

-C4.2XLARGE32

832

1,000,000

8

4.0

3.2GHz-C4.4XLARGE64

16

64

1,000,000

16

7.0

3.2GHz-C4.8XLARGE174

32

174

1,000,000

16

13.0

3.2GHz-C4.16XLARGE348

64

348

1,000,000

16

25.0

3.2GHz-Compute Network-optimized CN3
CN3 instances have up to 25 Gbps of private network bandwidth for greater bandwidth and lower latency. These
instances have the most powerful processors and the best cost performance among CVMs. They are ideal for
applications that require high computing performance and high-concurrence reads/writes.
Compute CN3 instances are equipped with the new Xeon® Skylake processors and support up to 25 Gbps of private
network bandwidth, which is 2.5 times greater than Compute C3.

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Application Scenarios
These instances are an ideal choice for:
Batch processing workloads and high performance computing (HPC)
High-traffic Web frontend server
Other compute-intensive services such as massively multiplayer online (MMO) game servers
Features
3.2 GHz Intel Xeon® Skylake 6146 processors
New Intel Advanced Vector Extension (AVX-512) instruction set
Supports up to 25 Gbps of private network bandwidth to meet extremely high private network transmission
requirements
The latest generation of 6-channel DDR4 memory with a memory bandwidth of 2,666 MT/s.
Supported CPU/RAM ratios: 1:2 and 1:4
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Support all types of cloud disks
Requirements
Supports pay-as-you-go.
Supports both classic network and VPC.
See below for available CN3 specifications:Throughput(pps)(received
and sent
packets)

NumberofqueuesPrivatenetwork
bandwidth(Gbps)(outboundandinbound)

CPU
clock
rate

Notes

Specification

vCPU

Memory(GB)

CN3.LARGE848600,000

4

3.0

3.2
GHz

-

CN3.LARGE164

16600,000

4

3.0

3.2
GHz

-

CN3.2XLARGE168

161,000,000

8

5.0

3.2
GHz

-

CN3.2XLARGE32

832

1,000,000

8

5.0

3.2
GHz

-

CN3.4XLARGE32

16

32

1,000,000

16

9.0

3.2

-

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Cloud Virtual MachineGHz
CN3.4XLARGE64

16

64

1,000,000

16

9.0

3.2
GHz

-

CN3.8XLARGE64

32

64

1,000,000

16

17.0

3.2
GHz

-

CN3.8XLARGE128

32

128

1,000,000

16

17.0

3.2
GHz

-

CN3.12XLARGE160

48

160

1,000,000

16

25.0

3.2
GHz

-

Compute C3
C3 instances have the most powerful processors and the best cost performance among CVMs. They are ideal for
applications that require high computing performance and high-concurrence reads/writes.
Compute C3 instances are equipped with the latest Xeon® Skylake processors with the latest DDR4 memory andsupport for higher private network bandwidth.
Application Scenarios
These instances are an ideal choice for:
Batch processing workloads and high performance computing (HPC).
High-traffic Web frontend server.
Other compute-intensive services such as massively multiplayer online (MMO) game servers.
Features
3.2 GHz Intel Xeon® Skylake 6146 processors.
New Intel Advanced Vector Extension (AVX-512) instruction set.
The latest generation of 6-channel DDR4 memory with a memory bandwidth of 2,666 MT/s.
Supported CPU/RAM ratios: 1:2 and 1:4.
The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Support all types of cloud disks.
Requirements
Supports pay-as-you-go.
Supports both classic network and VPC.
See below for available C3 specifications:
Specification

vCPU

Memory©2013-2022 Tencent Cloud. All rights reserved.

Throughput

NumberPrivate

CPU

Notes

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Cloud Virtual Machine

(GB)

(pps)
(received andsent packets)ofqueuesnetwork
bandwidth(Gbps)(outboundand inbound)

clock
rate

C3.LARGE84

8600,000

2

2.5

3.2
GHz

-

C3.LARGE164

16600,000

2

2.5

3.2
GHz

-

C3.2XLARGE168

161,000,000

2

3.0

3.2
GHz

-

C3.2XLARGE32

832

1,000,000

2

3.0

3.2
GHz

-

C3.4XLARGE32

16

32

1,000,000

4

4.5

3.2
GHz

-

C3.4XLARGE64

16

64

1,000,000

4

4.5

3.2
GHz

-

C3.8XLARGE64

32

64

1,000,000

8

8.0

3.2
GHz

-

C3.8XLARGE128

32

128

1,000,000

8

8.0

3.2
GHz

-

Compute C2
C2 instances are optimized with high-performance processors and deliver high cost performance. They are ideal for
applications that require high computing performance and high-concurrence reads/writes.
Application Scenarios
These instances are an ideal choice for:
Batch processing workloads.
High-traffic Web servers, massively multiplayer online (MMO) game servers.
High-performance computing (HPC) and other compute-intensive applications.
Features
3.2 GHz Intel Xeon® E5-2667v4 processors with up to 3.6 GHz of turbo frequency; DDR4 memory.
Supported CPU/RAM ratios: 1:2 and 1:4.

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The network performance of an instance depends on its specification. A higher specification means a greater network
forwarding performance and a higher private network bandwidth cap.
Support all types of cloud disks.
Requirements
C2 instances are pay-as-you-go, and can also be used as production instances of computing host HC20 in CDHs.
Supports both classic network and VPC.
See below for available C2 specifications:

Specification

vCPU

Memory(GB)

C2.LARGE8

4

C2.LARGE16

Throughput(pps)

NumberPrivatenetwork
bandwidth(Gbps)(outboundand inbound)CPU(received
and sent
packets)ofqueues

clock
rate

Notes

8

550,000

4

2.5

3.2
GHz

-

4

16

550,000

4

2.5

3.2
GHz

-

C2.LARGE32

4

32

550,000

4

2.5

3.2
GHz

-

C2.2XLARGE168

16550,000

8

3.5

3.2
GHz

-

C2.2XLARGE32

8

32

550,000

8

3.5

3.2
GHz

-

C2.4XLARGE32

16

32

850,000

8

6.0

3.2
GHz

-

C2.4XLARGE64

16

64

850,000

8

6.0

3.2
GHz

-

C2.8XLARGE96

32

96

850,000

8

10.0

3.2
GHz

-

Heterogeneous Computing Instance Family
This family is equipped with heterogeneous hardware such as GPU and FPGA to deliver real-time, fast parallel
computing and floating-point computing capabilities. It is suitable for high-performance applications such as deep

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Cloud Virtual Machinelearning, scientific computing, video encoding/decoding, and graphics workstations.
The AMD GPU instances use AMD FirePro S7150 to provide outstanding graphics processing capability. It is the best
choice for applications such as remote desktop, 3D rendering, and cloud gaming.
NVIDIA GPU instances use NVIDIA Tesla GPUs, including the previous generation M40, the current mainstream
choice P4/P40, and the latest generation V100, to provide excellent general-purpose computing capability, making
this the top choice for applications such as deep learning training/reasoning and scientific computing. NVIDIA GPU
Instances >©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Life Cycle：

Last updated 2024-01-08 09:12:28
The lifecycle of a Tencent Cloud CVM instance refers to all statuses from the launch of the instance to its release.
Properly managing the CVM instance in different statuses can ensure that applications running on the instanceprovide services economically and efficiently.
Instance Status
An instance has the following statuses:
StatusStatusName

Attributes

Creating

IntermediatestatusDescription

The instance has been created but is not running yet.
The instance is running normally, and you can run your services on thisRunning

Steady status

Restarting

IntermediatestatusReinstalling

Intermediatestatus

The instance's system has been reinstalled or its disk has beenreconfigured via the console or APIs, but the instance is not running yet.

Shutting

Intermediate

A shutdown operation has been performed for the instance via the consoleor APIs, but the instance has not been shut down yet. If this status lasts for

Down

statusinstance.
A restart operation has been performed for the instance via the console orAPIs, but the instance is not running yet. If this status lasts for a long time,
there may be an exception.

a long time, there may be an exception. We do not recommend forced
shutdown.

Shutdown

Steady status

The instance has been shut down normally and cannot provide external
services. Some instance attributes can only be modified when the instanceis in shutdown status.

Terminating

Intermediatestatus

The instance has expired for 7 days or the user has performed thetermination operation, but it has not completed yet.

Reclaimed

Steady status

A pay-as-you-go instance has been manually terminated for less than 2hours and put into the recycle bin. In this status, the instance does notprovide external services.

Released

Steady status

The release operation has been completed. The original instance no longer
exists, cannot provide services, and its data is completely cleared.

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Cloud Virtual Machine

Instance Status Transition:

Launching an instance
After an instance is launched, it goes to the "Creating" status. For an instance in this status, its hardware specifications
will be configured according to the specified instance type, and the system will launch the instance using the image
specified at launch.
An instance goes to "Running" status after it is created. An instance in the running status can be connected to andaccessed normally.
For more information about instance startup, see Creating an Instance, Logging In to a Windows Instance, andLogging In to a Linux instance.

Restarting an instance
We recommend you restart an instance via the Tencent Cloud Console or Tencent Cloud APIs instead of running the
OS restart command in the instance.
After the restart operation is performed, the instance will enter the restarting status.
Restarting an instance is like restarting a computer. After restarted, the instance will retain its public IP address,
private IP address and all data on its disk.
Depending on its configuration, restarting the instance normally takes dozens of seconds to several minutes.

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Cloud Virtual Machine

For more information about how to restart an instance, see Restarting Instances.

Shutting down an instance
You can shut down the instance in the console or by using APIs.
Shutting down an instance is like shutting down a computer.
A shutdown instance no longer provides services, but the billing of the instance continues.
A shutdown instance is still visible in the console.
You need to shutdown an instance for some operations, such as adjusting hardware configurations and resetting the
password.
The shutdown operation does not change the CVM's public IP, private IP, or any data on its disks.
For more information about shutting down an instance, see Shutting Down Instances.

Terminating and releasing an instanceIf you no longer need an instance, you can terminate and release it in the console or by using APIs.
Manual termination: Pay-as-you-go instances are released after being moved to the recycle bin for two hours.
Auto termination due to expiry or overdue payment: Pay-as-you-go instances will be automatically terminated when
the account balance drops below 0 for 2 hours and 15 days. Billing will continue for the first 2 hours, then the instancewill shut down and no longer be billed. The overdue pay-as-you-go instance will not enter the recycle bin and can beviewed on the instance list. You can continue to use the instance if you renew it within the specified time.
When an instance is terminated, its system disk and data disks specified at purchase will be released. However, cloud
disks attached to the instance will not be affected.
For more information on terminating an instance, see Terminating Instances.

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Cloud Virtual Machine

Spot Instance：

Last updated 2024-06-25 15:51:01

Overview
Spot instances represent a billing mode for Cloud Virtual Machine (CVM) services, where prices fluctuate in real time
based on market supply and demand dynamics. Their most distinctive features include discounted sales and a systeminterruption mechanism. This means you can purchase instances at a certain discount, but the system may
automatically reclaim these discounted instances. Once you purchase a spot instance, its use is virtuallyindistinguishable from that of a pay-as-you-go CVM instance, encompassing console operations, remote login, service
deployment, and VPC association, among others. Compared to the pay-as-you-go billing mode, opting for spot
instances can result in savings of up to 97% on instance costs.
Reference: FAQ > About Instance > Spot Instances
Reference: Spot Instances

Important Considerations
System interruption due to insufficient supply: Currently, spot instances will not be interrupted due to the pricereason, but may be interrupted if spot instances are in short supply. If the supply is insufficient, Tencent Cloud will
randomly repossess allocated spot instances without retaining the instance data.
Available in almost all regions: Spot instances are available in almost all Tencent Cloud regions. The instancetypes supported by spot instances are the same as those supported by pay-as-you-go instances. For the latest
regions and instance types supported, see Spot Instances.

Features1. Cost-effectiveness©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Spot instances are sold at a discount of up to 97% off the prices of pay-as-you-go instances.
Discount range: Spot instances are sold at a discount of up to 97% off the price of pay-as-you-go instances of thesame specification.
Exclusions: The discount only applies to CVM CPU and memory. Other items including system disks, data disks,
bandwidth, and paid images are not eligible for the discount.
Price fluctuations: When market supply and demand dynamics shift, prices will experience fluctuations.

2. System interruption mechanism©2013-2022 Tencent Cloud. All rights reserved.

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Unlike pay-as-you-go instances which can only be released by users, spot instances may be interrupted by the system
due to price or resource availability reasons.
System interruption due to insufficient supply: Currently, spot instances will not be interrupted due to the pricereason, but may be interrupted if spot instances are in short supply. If the supply is insufficient, Tencent Cloud will
randomly repossess allocated spot instances without retaining the instance data.

Non-applicable Scenarios
As spot instances may be interrupted, their lifecycle is not under your control. Therefore, it is not recommended to run
services with high stability requirement on a spot instance. For example:
Database services
Online and website services without load balancers
Core control nodes in a distributed architecture
Prolonged big data computing job lasting over 10 hours

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Applicable scenarios
Big data computing
Online and website services with load balancers
Web crawler service
Other computing scenarios with fine granularity or support for checkpoint restart

Applicable industries
Gene sequencing and analysis
Drug crystal form analysis
Video transcoding and rendering
Financial and transaction data analysis
Image and multimedia processing
Science calculations, such as in geography and hydromechanics.

Limits and Restrictions
Quota limits: Currently, the spot instances for each account per availability zone can contain up to 200 vCPU coresin total. To increase the quota, please submit a ticket.
Purchase limits: Vouchers are not available to spot instances.
Operation restriction 1: You cannot upgrade and degrade the configuration of spot instances.
Operation restriction 3: No charges when shut down is not supported for spot instances.
Operation restriction 4: System reinstallation is not supported for spot instances.
Operation restriction 5: You cannot expand the system disks and data disks of spot instances.

Best Practices
1. Splitting tasks
Split a prolonged task into fine-grained subtasks for lower possibility of interruption.
Use a big data suite such as EMR that comes with a splitting mechanism.

2. Using load balancers to ensure the stability of online and website services
Use load balancers, such as CLB, at the access layer.
Use a combination of some pay-as-you-go instances and many spot instances for backend resources.
Monitor the interruptions of spot instances and remove instances that are about to be interrupted from the CLB.

3. Using a computing scheduling mode that supports checkpoint restart©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual MachineStore intermediate computing results on permanent storage products such as COS, CFS, and NAS.
Be aware of the instance metadata to monitor which instances are about to be interrupted and save the computing
results within the retention period of 2 minutes.
Resume the last computing when a spot instance is started again.

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Storage
Storage Overview：

Last updated 2024-01-08 09:12:28
Tencent Cloud provides a wide range of flexible and cost-effective data storage devices for CVM instances. The
performance and price varies by the type of storage device, which is suitable for different scenarios.

Storage Devices
Storage devices can be divided into the following categories by dimension:
Dimension

Category

Description

HDD disk

Uses hard disk drive (HHD) as the storage medium. It features a low priceand fast read/write speeds.

StorageMediumUses solid state drive (SSD) as the storage medium. It features excellent
SSD disk

IOPS and read/write speeds, with an IOPS and throughput of up to 20
times and 16 times higher than those of the HDD disk. It is more expensive
than the HDD disk.

System disk

Used to store the collection of systems that control and schedule theoperation of CVM. It uses images.

Data disk

Used to store all user data.

Cloud Block
Storage

Cloud Block Storage (CBS) is an elastic, highly available, highly reliable,
low-cost, and customizable network block device that can be used as astandalone scalable disk for CVM. It provides data storage at a data blocklevel and employs a 3-copy distributed mechanism to ensure data reliability.
You can adjust the hardware, disk, and network of a CVM with CBS.

Cloud Object
Storage

Cloud Object Storage (COS) is a data storage device on the Internet. It
allows data retrieval from any location on the CVM instance or the Internet,
reducing storage costs. It is unsuitable for low-latency and high-IO
scenarios.

Use Cases

Architecture

Block storage device mapping©2013-2022 Tencent Cloud. All rights reserved.

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Each instance has a system disk to ensure basic data operations, and may mount more data disks. An instance uses
block storage device-mapping to map the storage devices to locations it can identify.
CBS puts data into blocks in bytes and allows random access. Tencent Cloud supports two types of CBS devices:
local disk and cloud disk.

This figure shows how CBS maps the block storage device to the CVM: it maps /dev/vda to the system disk andmaps the two data disks to /dev/vdb and /dev/vdc , respectively.
The CVM instance can automatically create block storage device mapping for local disks and cloud disks mounted toitself.

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Cloud Block Storage：

Last updated 2024-01-08 09:12:28
Tencent Cloud Block Storage (CBS) provides a persistent block storage service for CVM instances.
CBS automatically stores data in multiple redundant copies in an availability zone to eliminate the risk of single pointsof data failure, providing up to 99.9999999% data reliability.
CBS offers cloud disks of multiple types and specifications to achieve stable and low-latency storage performance.
Cloud disks can be attached to and detached from CVM instances in the same availability zone. It takes only a few
minutes to adjust the disk capacity.

Typical Use Cases
When your CVM is running out of disk space, you can purchase one or more cloud disks and attach them to the CVM.
You don’t need to purchase extra storage capacity while purchasing a CVM. You can purchase cloud disks later whenit’s necessary.
When you need to transfer data from one CVM to another, just detach the cloud data disk from the source CVM andattach it to the target CVM.
Use multiple cloud disks to form a Logical Volume Manager (LVM) to go beyond the physical limit of a single clouddisk.
Use multiple cloud disks to form a Redundant Array of Independent Disks (RAID) configuration to go beyond the I/O
performance limit of a single cloud disk.

Lifecycle
The lifecycle of a non-elastic cloud disk is the same as that of the CVM. It is purchased with the CVM and used as asystem disk. It cannot be attached to or detached from CVMs.
The lifecycle of an elastic cloud disk is independent from CVM instances. You can attach multiple cloud disks to a
CVM instance as data disks, detach them, and then reattach them to another instance.

Types
Four types of cloud disks are provided, including Premium Cloud Storage, SSD, Enhanced SSD, andTremendous SSD. Each type has unique performance and characteristics, and the price varies. You can choose thecloud disk type that best suits your application requirements. For more information, see Cloud Disk Types and Price
Overview.

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Relevant Operations
For information on CVM instance and cloud disk configurations, see Creating Cloud Disks and Attaching Cloud Disks.
For information about best practices for capacity expansion, detachment, termination, and other operations, see the
CBS documentation.

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Local Storage：

Last updated 2024-01-08 09:12:28

Overview
A local disk is a storage device on the same physical server as the CVM instance. It features high read/write I/O andlow latency.
The local disk is a local storage device on the same physical server as the CVM instance. It is a reserved storage
space on the physical server (currently only available to high I/O and big data CVM instances). The reliability of datastored on a local disk depends on that of the physical server. There may be a single point of failure.
Note:
In case of a hardware failure on the physical server of the CVM, local disk data lose may occur. We recommend data
redundancy at the application layer to ensure reliability. If your application does not support this, consider using Cloud
Block Storage to improve data reliability.
For a CVM using a local disk as the system disk, hardware (CPU, memory, and storage) upgrade is not supported.
You can only adjust the bandwidth of the instance.

Use Cases
IO-intensive applications: For large relational databases, NoSQL, ElasticSearch, and other I/O-intensive
applications that are more sensitive to latency, you can use the NVME SSD local disk that comes with high I/O CVM
instances, but note that it carries the risk of a single point of failure.
Big data applications: For big data applications such as EMR that are less sensitive to latency and feature data
redundancy at the upper layer to tolerate a single point of failure, you can use the SATA HDD disk that comes with big
data CVM instances.

Local Disk Lifecycle
The lifecycle of a local disk is the same as that of the CVM instance it is attached. Therefore, local disks launch andterminate with CVM instances.

Local Disk Types©2013-2022 Tencent Cloud. All rights reserved.

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Local disks are local storage devices on the same physical server as the CVM instance. There are two types of local
disks by media: SATA HDD and NVME SSD.
Disk Type

CVM

Local SATA HDD

Big data CVM

Local NVME SSD

High I/O CVM

Purchasing a Local Disk
A local disk can only be purchased together with a CVM instance. For more information on purchasing a CVM
instance, see Creating Instances.

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Cloud Object Storage (COS)：

Last updated 2024-01-08 09:12:28
Cloud Object Storage (COS) provided by Tencent Cloud is a distributed storage service designed to handle a
massive amount of files. You can store all your files in one place and manage them using an easy-to-use interface at
any time.
COS stores data redundantly across multiple regions and allows multiple clients or application threads to perform
read/write operations on the data at the same time. The data on COS can be retrieved in a similar way to data on
Internet domain names and be accessed by using an HTTP URL address.
For more information on COS, refer to COS Product Overview.

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Image
Overview：

Last updated 2024-01-08 09:12:28

ImagesA Tencent Cloud image provides all the information needed to launch a CVM instance. With an image, you can launch
instances with similar configurations easily. Generally speaking, an image is the "installation disk" of a CVM instance.

Image Types
Tencent Cloud provides the following types of images:
Public image: Available to all users and cover major operating systems.
Custom image: Only available to the creator and the users with whom the image is shared. A custom image can becreated from a running instance or imported from external sources.
Shared image: Shared by other users. You can use shared images to create instances, but cannot modify the shared
images.
For more information, see Image Types.

Image Billing
For billing details of images, see Billing Overview.

Deployment with Images vs Manual Deployment
Mode/Item

Deployment with Images

Manual Deployment

Deployment
duration

3 to 5 minutes

1 to 2 days

Quickly create a suitable CVM based on mature
marketplace solutions or the already usedsolutions.

Select the appropriate operating
system, database, application
software and plugins to create a
CVM, and installation and debugging
is required.

Deployment
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Public images and custom images have been
Security

tested and audited by Tencent Cloud. The

It depends on the development andsources of shared images need to be identified bydeployment personnel.

users.
Public images: Genuine operating systems,
which contain the initialized add-ons provided by
Applicable
scenarios

Tencent Cloud.Custom images: Quickly create
the same software environment as an existing

Configure a CVM completely by
yourself, without basic settings

CVM, or perform environment backup.Sharedprovided.

images: Quickly create the same softwareenvironment as other users' CVMs.

Use Cases
Deploy a specific software environment
You can use shared images and custom images to quickly set up an environment with the specific software.
Deploy software environment in batch
By creating an image of a CVM instance, you can create multiple CVM instances with the same environment bychoosing the image as the OS.
Back up a server runtime environment
You can create an image of a CVM instance to back up the running environment. If the CVM instance ceases to run
properly because its software environment is damaged, this image can be used to recover the environment.

Custom Image Lifecycle
After creating or importing a custom image, you can use it to launch new instances. The diagram below shows the
lifecycle of a custom image.

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Image Types：

Last updated 2024-05-16 10:23:34
You can select an image based on the following attributes:
Location (see Regions and Availability Zones)
Operating system
Architecture (32-bit or 64-bit)
Tencent Cloud provides three types of images, namely public images, custom images, and shared images.

Public Images
Public images are images provided by Tencent Cloud. Each image contains an operating system and initialization
components provided by Tencent Cloud, and is available to all users.
Features:
Operating system: you can select a preferred operating system, such as Linux or Windows. Operating systems are
updated regularly.
Software: public images are integrated with software packages provided by Tencent Cloud, and support multiple
versions of software with full permissions, such as Java, MySQL, SQL Server, Python, Ruby, and Tomcat.
Security: all provided operating systems are licensed. All images are created by Tencent Cloud’s security and OPS
team, and are strictly tested. The Tencent Cloud security components are also available.
Limit: none.
Fees: all public images are free of charge, except for Windows images in certain regions outside the Chinese
mainland where a license fee may be charged.
Technical support:
Tencent Linux is provided and maintained by Tencent Cloud.
For issues involving third-party images, contact the open-source community or the operating system vendor. Tencent
Cloud will provide technical assistance during the troubleshooting process if needed.

Custom Images
Custom images are made by users using the image creation feature, or imported using the image import feature.
Custom images are only available to creators and the people they share them with.
Features:
Use case: an image created from a CVM instance with applications deployed can be used to quickly create moreinstances that contain the same configuration.

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Features: you can create, copy, share and terminate images.
Limitation: each region only supports a maximum of 500 custom images.
Fees: image creation may incur fees. For the actual cost, refer to the price shown when you create the image. Crossregion replication of custom image is free of charge.
For more information on custom images, see Creating Custom Images, Copying Images, Sharing Custom Images,
Cancelling Image Sharing, and Importing Images.

Shared Images
Shared images are custom images shared with you by another Tencent Cloud user using the image sharing feature.
These images are displayed in the same region as the original images.
Features:
Use case: help other users quickly create a CVM instance.
Features: the shared image can only be used to create CVM instances. Renaming, copying, or re-sharing the image
with others are not supported.
Security: shared images are not checked by Tencent Cloud, which may pose security risks. We strongly recommend
against using images from unknown sources.
Limitations: each custom image can be shared with a maximum of 500 Tencent Cloud users. Custom images canonly be shared with accounts in the same region as the source account.
For more information on shared images, see Sharing Custom Images and Cancelling Image Sharing.

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Public Image
Official Maintenance End Plans of Operating
Systems：

Last updated 2024-03-28 10:32:42
The public image maintenance plan of Tencent Cloud is consistent with the official maintenance plans of operating
system platforms. This document provides links to the image version maintenance plans of these platforms.
Note:
When an OS is discontinued, any software maintenance and support, including bug fixes and feature updates, areunavailable. Please update your operating system in time or try another image tag.

Tencent Cloud Home-grown OS
TencentOS Server
VersionEnd of maintenance

TencentOS Server 2

2032-12-31

TencentOS Server 32032-12-31

Tencent Cloud will keep providing maintenance services for TencentOS Server 2 and TencentOS Server 3 till
December 31, 2032.

Third-Party Operating Systems
Windows
Version

Mainstream Update End Date

Extension Update End Date

Windows Server 2022 Datacenter

2026-10-13

2031-10-14

Windows Server 2019 Datacenter

2024-01-09

2029-01-09

Windows Server 2016 Datacenter

2022-01-11

2027-01-12

Windows Server 2012 R2 Datacenter

2018-10-09

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For more information about official maintenance plans, visit the Microsoft Windows Server official website.

OpenCloudOS
Version

Maintenance End Date

OpenCloudOS 8

2029-12

CentOS
VersionWhole Update End Date

Maintenance Update End Date

CentOS Stream 92027-05-31

2027-05-31

CentOS Stream 82024-05-31

2024-05-31

CentOS 8

2021-12-31

2021-12-31

CentOS 7

2020-08-06

2024-06-30

CentOS 6

2017-05-10

2020-11-30

For more information about official maintenance plans, visit the CentOS official website.
Note:
CentOS plans to officially discontinue support for CentOS Linux. Tencent Cloud provides you with two alternative
solutions: OpenCloudOS and TencentOS Server, both compatible with CentOS.

UbuntuVersionStandard Support End Date

Extension Update End Date

Ubuntu 22.04 LTS

2027-04

2032-04

Ubuntu 20.04 LTS

2025-04

2030-04

Ubuntu 18.04 LTS

2023-042028-04

Ubuntu 16.04 LTS

2021-042026-04

For more information about official maintenance plans, visit the Ubuntu official website.

DebianVersionSupport End

EOL-Long-Term Support End

EOL-Extension Long-Term Support End

Date

Date

Date

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Debian11

2024-072026-06

None

Debian10

2022-072024-06

2029-06-30

Debian 9

2020-07-06

2022-06-30

2027-06-30

For more information about official maintenance plans, visit the Debian official website.

Red Hat Enterprise Linux

VersionRed Hat
EnterpriseLinux 8Red Hat
EnterpriseLinux 7

Fully

First-Stage

Second-Stage

Extended Lifecycle

Support

Maintenance Support

Maintenance Support

Support (ELS) End

End Date

End Date

End DateDate2024-0531

N/A

2029-05-31

2031-05-31

2020-08-06

2024-06-30

2026-06-30

2019-0806

For more information, see Red Hat Enterprise Linux Life Cycle.
Note:
You can select an instance model that has been certified for Red Hat Enterprise Linux to use the Red Hat EnterpriseLinux image. For supported image tags and instance models, see FAQs about Red Hat Enterprise Linux Image.

AlmaLinux
Version

Maintenance End Date

AlmaLinux 8.5

2031-11For more information about official maintenance plans, visit the AlmaLinux official website.

CoreOS
Version

Maintenance End Date

CoreOS Container Linux

2020-05-26©2013-2022 Tencent Cloud. All rights reserved.

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FreeBSD
Version

Maintenance Update End Date

FreeBSD 13.1

2023-06-30

FreeBSD 13.0

2022-08-31

FreeBSD 12.3

2023-03-31

FreeBSD 12.2

2022-03-31

For more information about official maintenance plans, visit the FreeBSD official website.

Rocky Linux
Version

Maintenance End Date

Rocky Linux 9.0

2032-05-31

Rocky Linux 8.6

2029-05-31

Rocky Linux 8.5

2029-05-31

For more information about official maintenance plans, visit the Rocky Linux official website.

OpenSUSE
Version

Maintenance Update End Date

OpenSUSE Leap 15.4

2023-11

OpenSUSE Leap 15.3

2022-11

OpenSUSE Leap 15.2

2022-01-04

OpenSUSE Leap 15.1

2021-02-02

For more information about official maintenance plans, visit the OpenSUSE official website.

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TencentOS Server
TencentOS Server Introduction：

Last updated 2024-01-08 09:12:28
TencentOS Server (aka Tlinux or TS) is a Linux distribution developed by Tencent Cloud for cloud scenarios. It offers
specific features and performance optimizations to deliver a higher performance and a more secure and reliableruntime environment for applications in CVM instances. Independently developed and designed based on the Linuxkernel on top of Tencent's technical experience accumulated in the field of operating systems over the last decade,TencentOS Server has been verified and improved by Tencent's many internal businesses for many years. It is usedas the OS of more than 99% of internal servers in all Tencent businesses. Meanwhile, as Tencent has the widest
variety of business ecosystems in China ranging from social networking, gaming, and payment to AI and security,
TencentOS Server's core capabilities such as stability, security, compatibility, and performance have been fully
proven for a long time. Compared with community OS distributions, TencentOS Server is comprehensively enhanced
and optimized in terms of stability, performance, and container infrastructure. It can provide enterprises with stable
and highly available services to meet their demanding workload requirements, making it a better enterprise-grade OS
solution than CentOS. Tencent Cloud strives to make TencentOS Server the best OS in the cloud.
TencentOS Server is publicly available currently, and its user-mode environment is compatible with CentOS, so
applications developed on CentOS can run directly on TencentOS Server.

Use Cases
TencentOS Server is suitable for most models, including Standard, Compute, MEM Optimized, and High IO models. It
also supports CPM 2.0 and high-performance computing clusters.
Note:
If you need to use TencentOS Server to run a GPU instance, install the corresponding GPU driver.

TencentOS Server Strengths
Extreme stability verified by tens of millions of nodes
TencentOS Server has undergone long-term practical testing by massive businesses deployed on tens of millions ofnodes, delivering an overall availability of 99.999%.
Comprehensive optimization for a higher performance
The deeply optimized high-performance TencentOS Server has been improved for various software programs in thesystem. It increases the typical business performance by over 50%.

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Open-source compatibility for a better OS in the cloud
TencentOS Server is a 100% open-source Linux distribution. Its user mode remains compatible with CentOS and has
a higher stability and performance, making it a better alternative to CentOS in the cloud.
Deep customization designed for the cloud
TencentOS Server is dedicatedly developed for the cloud and suitable for a wide variety of workloads. It comes withthe latest open standards-based virtualization and cloud-native tools.
Security compliance with zero-downtime fix
The security lab safeguards the system, enhances system-level security, fixes various vulnerabilities promptly, andsupports hot patches to avoid unnecessary downtime.

TencentOS Server Image Version
Currently, three TencentOS Server images are available for your choice:
Image Version

Description

TencentOS Server 3.1

It is compatible with the CentOS 8 user mode and uses the tkernel4 version deeply
optimized based on the community 5.4 LTS kernel.

TencentOS Server 2.4

It is compatible with the CentOS 7 user mode and uses the tkernel3 version deeply
optimized based on the community 4.14 LTS kernel.

TencentOS Server 2.4

It is compatible with the CentOS 7 user mode and uses the tkernel3 version deeply(TK4)

optimized based on the community 5.4 LTS kernel.

TencentOS Server Kernel
The TencentOS Server kernel (tkernel) is decoupled from the distribution. The current main kernel is divided into two
versions.
tkernel4 deeply optimized based on community 5.4 LTS (tk4).
tkernel3 deeply optimized based on community 4.14 LTS (tk3).
For more information, see TencentOS Kernel's GitHub repository.

Using TencentOS Server
Use in the cloud
When you create an instance or reinstall the operating system of an existing instance, you can select a public image
and choose to use the corresponding version of OpenCloudOS. For detailed directions, see Creating Instances via©2013-2022 Tencent Cloud. All rights reserved.

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CVM Purchase Page and Reinstalling System.

Services and Updates
Tencent Cloud provides more than five years of maintenance and updates for each major version of TencentOS
Server, including regular image updates, introduction of new features and optimizations, timely security vulnerability
fixes, and bug fixes. Existing servers can be upgraded through yum for bug fixes in time.
For more information on TencentOS Server, follow Tencent Cloud Assistant on WeChat Mini Program.

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TencentOS Server Image Update Log：

Last updated 2024-07-04 11:47:49
Note
The image update history is organized by release time.
Images are released region by region. If an image is not of the latest version in the update history when you create a
CVM instance, the image may have not yet been released to the region.
If an image in the image update history cannot be found in the console, the image may have not been fully open.

Image Update History
The image architectures involved in this document are all x86. The update dates and features are as follows:

TencentOS Server 3 (TK4)2024-08-11
Upgraded additional user-mode software packages.
Switched yum source.
2024-06-07
Upgraded additional user-mode software packages.
Updated the kernel to v5.4.119-19.0009.44.
2024-05-22
Optimized the default crashkernel configuration of the image.
Upgraded additional user-mode software packages.
2024-03-28
Updated the kernel to v5.4.119-19.0009.40.
Upgraded other user-mode software packages.
2024-01-31
Updated user-mode software.
Updated the kernel to v0009.37.
Optimized /etc/motd display content.
No longer pre-installs MySQL related software packages by default.
Added ntp*.tencent.com in chrony.conf.
2023-09-05
Upgraded the kernel to 5.4.119-19.0009.28.
Upgraded other user mode software.
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Updated the user mode software.
Updated the kernel to 5.4.119-19-0009.11.
Enabled disk_setup in the cloud_init configuration file.
Modified the default open files configuration of the image.
2022-10-13
Updated the user mode software.
Updated the kernel to 5.4.119-19-0009.6.
Added the pre-installation of the kernel-debuginfo package.
Removed the pre-installation of the docker-ce package.
2022-07-21
Updated the kernel to 5.4.119-19.0009.3.
Updated other user mode software.
2022-04-19
Upgraded the Broadcom network card driver to 1.10.2-218.1.182.18.
2022-02-23
Installed java-8-konajdk-8.0.8-1.1.312.x86_64.
Updated polkit to 0.112-26.tl.1.
2022-01-28
Updated the kernel to 5.4.119-19-0009.1.
Fixed CVE-2022-0185.
2022-01-05
Updated the kernel to 5.4.119-19-0009.
Updated the default yum source domain name.
Installed docker-ce by default.
Enabled the rngd service by default.
2021-09-28
Updated the kernel to 5.4.119-19-0008.
Fixed several security vulnerabilities.
2021-06-23
Updated the kernel to 5.4.119-19-0007.
Fixed several security vulnerabilities.
2021-03-19
Updated the kernel to 5.4.32-19-0003.
Fixed several security vulnerabilities.

TencentOS Server 2 (TK4)2024-06-07
Updated the kernel to v5.4.119-19.0009.44.

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Upgraded additional user-mode software packages.
2024-05-22
Upgraded additional user-mode software packages.
Optimized the default crashkernel configuration of the image.
2024-04-03
Upgraded other user-mode software packages.
Updated the kernel to v5.4.119-19.0009.40.
Fixed an issue where the kernel-debuginfo version did not meet expectations.
2023-12-01
Updated the user mode software.
Upgraded the kernel to 5.4.119-19.0009.37.
Upgraded the MLNX driver to 5.4-3.6.8.1.
2023-09-05
Upgraded the kernel to 5.4.119-19.0009.28.
Upgraded other user mode software.
2022-11-07
Updated the user mode software.
Updated the kernel to 5.4.119-19-0009.11.
Enabled disk_setup in the cloud_init configuration file.
Modified the default open files configuration of the image.
2022-10-13
Updated the user mode software.
Updated the kernel to 5.4.119-19-0009.6.
Added default installation of the scl, devtoolset-8, and devtoolset-9 components.
2022-05-12
Updated the rdma driver to 5.4-3.1.0.0LTS.
Upgraded the kernel to 5.4.119-19.0009.3.
Updated the user mode software.
Upgraded the Broadcom network card driver to 1.10.2-218.1.182.18.
2022-02-23
Installed java-8-konajdk-8.0.8-1.1.312.x86_64.
Updated polkit to 0.112-26.tl.1.
2022-01-28
Updated the kernel to 5.4.119-19-0009.1.
Fixed CVE-2022-0185.
2022-01-11
Updated the kernel to 5.4.119-19-0009.
Fixed several security vulnerabilities.

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2021-10-26
Updated the kernel to 5.4.119-19-0008.
Fixed several security vulnerabilities.
2021-07-16
Updated the kernel to 5.4.119-19-0007.
Fixed several security vulnerabilities.
2021-03-03
Launched TencentOS Server 2.4 (TK4) to the public cloud.

TencentOS Server 2.4
2023-06
Updates were stopped. The image was taken offline in June 2023.
2022-08-31
Updated other user mode software.
Updated the settings of crashkernel= in the startup parameters.
2022-07-28
Updated the kernel to 4.14.105-19.0024.
Updated other user mode software.
2022-04-19
Upgraded the Broadcom network card driver to 1.10.2-218.1.182.18.
2022-02-23
Installed java-8-konajdk-8.0.8-1.1.312.x86_64.
2021-11-30
Enabled the rngd service by default.
Updated the user mode software to the latest version.
2021-10-27
Updated the kernel to 4.14.105-19-0022.
Updated the user mode software to the latest version.
2021-07-21
Updated the kernel to 4.14.105-19-0020.
Updated the user mode software to the latest version.
2021-04-14
Updated the kernel to 4.14.105-19-0018.
Updated the user mode software to the latest version.
2020-09-24
Updated the kernel to 4.14.105-19-0017.
Updated the user mode software to the latest version.
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Updated the kernel to 4.14.105-19-0016.
Updated the user mode software to the latest version.
2019-12-23
Updated the kernel to 4.14.105-19-0015.
Updated the user mode software to the latest version.
2019-08-23
Updated the kernel to 4.14.105-19-0014.
Updated the user mode software to the latest version.
2019-06-28
Launched TencentOS Server 2.4 to the public cloud.

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TencentOS Server Features：

Last updated 2024-01-08 09:12:28

Kernel Customization
Based on the long-term stable Linux Kernel version, TencentOS Server introduces new features applicable to cloud
scenarios and improves the kernel performance and resolves major defects.

Performance Optimizations for Container Scenarios
TencentOS Server is optimized for container scenarios, with enhanced isolation and optimized performance:
meminfo, vmstat, cpuinfo, stat, and loadavg isolation.
Sysctl isolation, such as tcp_no_delay_ack, tcp_max_orphans.
Fixes bugs in file systems and networks.
Fixes exceptions caused by reuse of connections in high-concurrence scenarios in IPVS mode.
Fixes network glitches caused by excessive IPVS rules under high-spec nodes (with many CPU cores) in IPVS mode.
Fixes network glitches caused when cAdvisor got stuck in the kernel state for too long while reading memcg in highdensity container scenarios (many containers on a single node)Fixes network glitches caused by CPU load balancing in scenarios of high-spec nodes (with many CPU cores) andlarge pods (occupying many cores with high usage per core).
Fixes the problem of periodic network jitter caused by TCP connection monitoring (for example, cAdvisor configuration
is deployed separately to monitor TCP connection) in high-concurrency scenarios.
Optimizes soft interrupt for receiving network packets to enhance network performance.

Customized Container Features
Isolated display of container resources
Adds a host-level switch: TencentOS Server realizes a LXCFS-like feature in its kernel. Instead of deploying nodes inthe LXCFS file system or modifying POD spec, you only need to run the sysctl -w
kernel.stats_isolated=1 command to enable a global switch on nodes, and then files such as/proc/cpuinfo and /proc/meminfo obtained will be isolated by container.
Note:
The kernel.stats_isolated parameter is supported only by TencentOS Server 2.4 but not TencentOS
Server 2.4 (TK4), 3.1, or above.

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Adds a container-level switch: TencentOS Server adds a container-level switch
kernel.container_stats_isolated for special containers such as node monitoring component. When thehost-level switch is enabled, you only need to run the sysctl -w kernel.container_stats_isolated=0
command in the container startup script to disable the container-level switch, and then the host information will beobtained by reading files such as /proc/cpuinfo and /proc/meminfo in containers.

Kernel parameter isolation
TencentOS Server isolates the following kernel parameters by namespace:net.ipv4.tcp_max_orphans
net.ipv4.tcp_workaround_signed_windows
net.ipv4.tcp_rmem
net.ipv4.tcp_wmem
vm.max_map_countOptimization of default container kernel parameters
TencentOS Server increases the default value of net.core.somaxconn in the container network namespace to4096, thus preventing packet loss caused by a full SYN queue in high-concurrence situations.

Performance Optimization
TencentOS Server optimizes computing, storage, and network subsystems:
Optimizes XFS memory allocation to resolve the XFS kmem_alloc failure alarm.
Optimizes memory allocation for received network packets to resolve excessive memory usage when a large numberof UDP packets are received.
Limits the memory usage of the system page caches to maintain optimal service performance and prevent out-ofmemory (OOM) errors.

Software Packages
The user-mode software package for TencentOS Server 2 is compatible with the latest CentOS 7, which can be useddirectly on TencentOS Server 2.4.
The user-mode software package for TencentOS Server 3 is compatible with the latest RHEL 8, which can be useddirectly on TencentOS Server 3.1.
The software packages can be updated and installed via Yellowdog Updater, Modified (YUM).
Software packages in the Extra Packages for Enterprise Linux (EPEL) repository can be used after the epel-releasepackage is installed via YUM.

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Defect Fixes
The Kdump feature is provided in the event of an operating system crash.
Kernel live patching is supported.

Security Updates
TencentOS Server offers regular updates to enhance its security and features.

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FAQs about TencentOS Server：

Last updated 2024-01-08 09:12:28

What is TencentOS Server?
TencentOS Server (also known as Tencent Linux, TS, or Tlinux) is Tencent's Linux operating system designed forcloud scenarios. With specific features and optimized performance, it provides a high-performance, secure, andreliable operating environment for applications in CVM instances.
TencentOS Server contains the TencentOS kernel developed by the TencentOS team and is deeply customized
based on the cloud environment to introduce the latest Linux innovations to the market and offer high performance,
scalability, and reliability for various software programs of enterprises. It is free of charge, and you can get updates
and technical support from the TencentOS team continuously.

What are the characteristics of TencentOS Server?
TencentOS Server has the following characteristics:
Deeply customized out-of-the-box service with no complex configuration required.
High security and compliance with support for hotfixes and zero-downtime repair.
Long-Term support by a powerful operations support team and full open-sourceness.
Comprehensively optimized high-performance operating system specifically design for cloud scenarios.

What are the strengths of TencentOS Server compared with other Linux distributions?
Compared with Linux distributions such as CentOS and Ubuntu, TencentOS Server has the following strengths:
It has been proven by and optimized through a large number of Tencent businesses for over a decade.
It is supported by an authoritative kernel expert team.
It is out-of-the-box with key performance optimizations and features customized for cloud and container scenarios.
It has a powerful operations support team, from which you can get strong business support simply by paying small
fees.

In what editions is TencentOS Server available?
Currently, TencentOS Server is available in the following two editions:
TencentOS Server 2 (TS2): latest user mode package based on CentOS 7.
TencentOS Server 3 (TS3): latest user mode package based on RHEL 8.
The user mode software package of TencentOS Server maintains 100% binary compatibility with RHEL.

In what editions is the TencentOS Server kernel available?
The TencentOS Server kernel (TK) is available in the following two editions:
TK3: kernel version based on longterm Community Edition 4.14.
TK4: kernel version based on longterm Community Edition 5.4.

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You can get the TK code from GitHub. For more information, see TencentOS-kernel.

How long is the lifecycle of TencentOS Server?
Below is the lifecycle of each TencentOS Server edition. Before the lifecycle ends, bugfixes and security patch
updates will be provided continuously.
TencentOS Server 2 distribution: The maintenance will continue until December 31, 2032.
TencentOS Server 3 distribution: The maintenance will continue until December 31, 2032.

How do I use TencentOS Server in Tencent Cloud?
Tencent Cloud provides public images in two TencentOS Server editions. You can choose to use a TencentOS
Server image edition when creating a Linux CVM instance.

Which CVM instance types does TencentOS Server support?
TencentOS Server supports most CVM instance types. You can select an image on the CVM instance purchase page
to use it.

How do I install and upgrade software programs after using TencentOS Server?
On TencentOS Server distribution, you can run the yum command as well as the t command that comes with
TencentOS Server to manage software packages. In addition, TencentOS Server 3 supports running the dnf
command to manage software packages.

Can I install and use TencentOS Server on my local server?
Yes. You can download the TencentOS Server distribution .iso file. Click here for TencentOS Server 2 or here forTencentOS Server 3.
You can install and use TencentOS Server on your local server or a VM such as VirtualBox.

Can I view the TencentOS Server source code?
TencentOS Server is fully open-source. You can get the source code package here or by running the yum
downloader --source glibc command in the system.

Does TencentOS Server support 32-bit applications and libraries?
No. You can install certain 32-bit software packages through yum on TencentOS Server 2.

How does TencentOS Server guarantee the system security?
TencentOS Server is binary compatible with RHEL 7 and 8 and complies with RHEL security specifications. Tencent
Cloud guarantees the security of TencentOS Server in the following ways:
Tencent's proprietary vulnerability scanning tool and other standard vulnerability scanning and security check tools in
the industry are used for regular security scanning.

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TencentOS Server cooperates with the Tencent Security team to implement system security scanning and hardening.
RHEL and community CVE patches are assessed and user mode software packages are updated regularly to fix the
security vulnerabilities.
CWP is used to regularly check the system security, trigger user security alarms, and provided solutions.

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OpenCloudOS
OpenCloudOS Overview：

Last updated 2024-01-08 09:12:28
OpenCloudOS, an open source operating system community jointly initiated by Tencent and its partners. It integrates
the advantages of vendors in software and open source ecosystem and Tencent's over 10 years of technicalaccumulation in the operating system and kernel fields. It supports most platforms, and is completely neutral, fully
open, secure, stable and high-performance.
OpenCloudOS 8.6 is the latest official release of the OpenCloudOS community. Its basic libraries and user-mode
components are fully compatible with CentOS 8. It is optimized and enhanced at the kernel level. It has been used on
more than 10 million nodes. The result shows that its stability is 70% better than CentOS 8 and the performance isimproved by 50% in specific scenarios.

Use Cases
OpenCloudOS works with the vast majority of production instances on the cloud, including Cloud Virtual Machine(CVM) and Cloud Bare Metal (CBM).
Note:
OpenCloudOS does not come with a preinstalled GPU driver. You need to install it on your own if necessary.

OpenCloudOS Image Tag
Tencent Cloud supports OpenCloudOS 8.6 image. The image is fully compatible with the CentOS 8 user mode andcomes with the OpenCLoudOS kernel that is built based on community 5.4 LTS.

OpenCloudOS Kernel
The OpenCloudOS kernel is built based on community 5.4 LTS. It includes the latest key features of the community,
as well as tailored optimizations for different business scenarios.

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When you create an instance or reinstall the operating system of an existing instance, select Public images andchoose an OpenCloudOS version as needed. For more information, see Creating Instances via CVM Purchase Page
and Reinstalling System.

Downloading OpenCloudOS
Download address: OpenCloudOS 8.6.

Update History
For update logs, see OpenCloudOS Image Update Log.

Services and Updates
The OpenCloudOS community provides up to 10 years of maintenance and updates for each major version of
OpenCloudOS (such as OpenCloudOS 8), including the latest kernel features, vulnerability fixes, and bug fixes.

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OpenCloudOS V8 Image Update Log：

Last updated 2024-05-21 10:52:47
Note
The image update history is organized by release time.
Images are released region by region. If an image is not of the latest version in the update history when you create a
CVM instance, the image may have not yet been released to the region.
If an image in the image update history cannot be found in the console, the image may have not been fully open. In thiscase, you can submit a ticket to obtain more information about the image.

2024
Updated Feature

Update Date

Optimized the crashkernel value configured in /etc/default/grub.
Upgraded the user-mode software packages.

2024-05-07

2023
Updated Feature
Rectified the i8042.noaux parameter issue.
Rectified the issue of an empty keymap.
Rectified the issue of certain repository URLs lacking
mirrors.tencentyun.com.

Update Date

2023-07-15

Upgraded the kernel to kernel-5.4.11920.0009.20.oc8.
Upgraded the user mode software.
Upgraded the dracut-related software to rectify thestartup exceptions of the kdump service.

2023-03-15

Launched OpenCloudOS 8.6 to the public cloud.

2022
Updated Feature©2013-2022 Tencent Cloud. All rights reserved.

Update Date

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Disabled the firewalld\\sssd\\rngd service.

2022-09-16

Uninstalled the microcode_ctl/nss-softokn/avahi package.
Set keymap.
Set timezone.
Set the cloudinit.target dependency for the boot of kdump.
Configured mirrors.tencentyun.com as the first URL in repo.
Modified the /etc/rc.d/rc.local file permission to 755.
Fixed permission errors of some directories in /var/lib/.
Updated the kernel version to 5.4.119-19.0010.
Updated other user mode software.

2022-07-27

Updated the image timestamp.
Launched OpenCloudOS 8.5 to the public cloud.

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OpenCloudOS V9 Image Update Log：

Last updated 2024-05-21 10:53:20
Note
The image update history is organized by release time.
Images are released region by region. If an image is not of the latest version in the update history when you create a
CVM instance, the image may have not yet been released to the region.
If an image in the image update history cannot be found in the console, the image may have not been fully open. In thiscase, you can submit a ticket to obtain more information about the image.

Image Update History
2024
Updated Feature

Update Date

Upgraded the kernel to 6.6.6-2401.0.1.oc9.4.
Upgraded other user-mode software packages.
Fixed the issue of two duplicate URLs in the yum configuration.

2024-05-07

Optimized the crashkernel value configured in /etc/default/grub.

2023
Updated Feature

Update Date

Configured dracut.conf to adapt to specific device models.

2023-08-04

Disabled irqbalance.service.
Configured selinux = disable.
Set locale to en_US.UTF-8.

2023-04-19

Rectified cloud-init.
Rectified locale.

2023-03-27

Launched OpenCloudOS 9.0 to the public cloud.

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Snapshot：

Last updated 2024-01-08 09:12:28

Overview
Real-time replica of online data
Snapshots are fully usable copies of cloud disks. When a problem occurs to a cloud disk where a snapshot has beencreated, you can use the snapshot to quickly restore the cloud disk to normal status. We recommend you to create asnapshot for the cloud disk before making any major changes to your businesses, so that data can be quickly restored
if the business changes failed.
Persistent backup at critical milestones
Snapshots can be used as persistent backups of business data to keep the business data at milestones.
Quick business deployment
Snapshots allow you to quickly clone multiple cloud disks for quick server deployment.

Use Cases
Snapshots provide convenient and efficient data protection service, which can be used in the following businessscenarios:
Daily data backup
You can use snapshots to regularly back up important business data to avoid data loss caused by incorrect
operations, attacks, and viruses.
Quick data recovery
You can create snapshots before performing major operations, such as changing operating systems, upgrading
applications, or migrating business data. If any problem occurs, you can use snapshots to restore the business data.
Application of multiple replicas of production data
You can create snapshots for the production data to provide near real-time data for applications such as data mining,
report query, and development testing.
Quick environment deployment
You can create snapshots for a CVM instance to create a custom image, and use the custom image to create CVM
instances for batch deployment with the same environment and less configuration time.

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For more information about snapshot prices, see Billing Overview and Price Overview.

Quota Limits
For more information about snapshot quota limits, see Use Limits.

Snapshot Types
Manual snapshot
You can manually create a snapshot for a cloud disk at a certain point in time. This snapshot can be used to create
more cloud disks with identical data, or to restore the cloud disk to the point in time when the snapshot was created.
For more information, see Creating Snapshots.
Scheduled snapshot
For businesses that are updated continuously, you can use scheduled snapshots to provide continuous data backups.
To achieve continuous backups of cloud disk data over a certain time period, you only need to configure a backup
policy and associate it with cloud disks, which significantly enhances data security. For more information, see
Scheduled Snapshot.
Note:
During snapshot creation, application data saved in the memory may not be persistently stored. As such, snapshots
may not capture the latest and most complete cloud disk data. For more information, refer to Notes to ensure snapshot
data consistency.

Case Review
Case 1: No manual snapshots were created before performing high-risk operations, resulting in data loss
Customer A has never created a snapshot for the cloud disk. In May 2019, an operator performed a fio test on thecloud disk. The file system was corrupted. The data was damaged and could not be recovered.
Analysis: If customer A has created a snapshot for the cloud disk before testing, the snapshot can be used to rollback data and resume business immediately after the data damage.
Case 2: No scheduled snapshots were created for important data disks, resulting in data loss
Customer B created snapshots for multiple cloud disks, except those purchased after January 2019 for cost reasons.
In June 2019, a cloud disk without snapshot protection had an unrecoverable data loss due to an accidental deletionof system-layer file data.
Analysis: If customer B has created scheduled snapshots for this cloud disk, the data can be recovered to the point in©2013-2022 Tencent Cloud. All rights reserved.

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for that cloud disk to enhance data protection.
Case 3: Using the scheduled snapshot to roll back data and restore business after an incorrect operation
Customer C created snapshots for all cloud disks. In May 2019, a startup exception occurred due to an incorrect
operation.
Analysis: Customer C promptly restored data using the scheduled snapshot that was created two days ago, and thebusiness remains stable.
These cases all involve data loss due to incorrect operations, but the results are different. By comparison, we can findthat:
In situations where a snapshot hasn’t been created, data is rarely recoverable when a server or cloud disk
exception occurs, resulting in major loss.
In situations where a snapshot has been created, data can be recovered when a server or cloud disk exception
occurs, minimizing loss.
We recommend regularly creating snapshots for businesses based on business types, enhancing data security andachieving low-cost, high-efficiency disaster recovery.

OthersFor other questions, refer to Snapshot FAQs.

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Network and Security
Overview：

Last updated 2024-01-08 09:12:28
Tencent Cloud offers network infrastructure and security services to ensure your business stays secure, efficient, andflexible.

Encrypted Login
Tencent Cloud provides two encrypted login methods using Login Password and SSH Key. You can use either one ofthese to connect to your CVM instance. Windows CVM does not support login using SSH keys.

Network access
Tencent Cloud products can communicate with one another using Internet Access or Private Network Access.
Internet Access: CMV instances and other Tencent Cloud products use Internet access to provide public-facing
services. They are assigned public IP addresses to communicate with other computers on the Internet.
Private Network Access: Tencent Cloud assigns private IP addresses to resources in the same region so they cancommunicate with one another on the same LAN for free.

Network Environment
Tencent Cloud provides two types of Network Environments: basic network and private networks (VPC).
Basic network is a shared networking resource pool for all users. We recommend basic network for beginners.
VPCs are custom network spaces that are logically isolated. You can launch CVM instances on a predefined andcustomized IP range to isolate your resources from those of other users. We recommend VPCs for users who are
comfortable with network administration.

Security Groups
A security group is a stateful virtual firewall capable of filtering. As an important means of network security isolation
provided by Tencent Cloud, it can be used to set network access controls for one or more TencentDB instances.
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Create multiple security groups and populate them with different rules.
Associate one or more security groups with each of your CVM instances. The system uses these security groups tocontrol traffic to your instances and the resources your instances can access.
Configure your security groups so that only specific IP addresses or security groups can access your instances.

Elastic Public IPs
Elastic Public IPs, or EIPs, are static IP addresses specially designed for cloud computing.
We recommend using EIPs in the following cases:
An instance can go down for unforeseeable reasons, and the failover instance needs to use the same IP address toprovide uninterrupted service.
An instance does not have a public IP address but still needs a static IP address.

ENIs
An Elastic Network Interface (ENI) is an elastic network interface that can be bound to a CVM instance on a VPC toprovide network connection. ENIs can be freely migrated among instances. This is essential when configuring andmanaging networks and implementing high availability deployments.

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Placement Group：

Last updated 2024-03-21 09:19:57
A placement group is a policy for distributing instances on the underlying hardware. The instances you create in theplacement group feature disaster recovery and high availability when launched. Tencent Cloud CVM provides an
instance placement policy, which can force the instances to be dispersed with a certain policy and reduce the impactof the underlying hardware/software failure on CVM services. You can use the placement group to deploy CVM
instances on different physical servers to ensure service high availability and the underlying disaster recovery
capability. When you create instances in a placement group, we will launch them in a specified region according to thedeployment policy you configured in advance. If you did not configure a placement group for the instances, we will try
to launch them on different physical servers to ensure service availability.

Spread Placement Group
Currently, spread placement group is supported. A spread placement group is a group of instances that are placed on
different underlying hardwares and have high availability. We recommend that you use a spread placement group for
applications of important instances that need to be placed separately, such as master/slave databases and highavailability clusters. By launching instances in a spread placement group, you can minimize the simultaneous failure of
instances with the same underlying hardware.
A spread placement group is region specific and can be deployed across multiple availability zones. There is a limit on
the number of instances that can be placed in a group. For more information, please see the Console.
Note:
When you launch instances in a spread placement group, the request will fail if you have insufficient hardware. You
can wait for a while and try again.

Spread placement group rules and limits
Before using a spread placement group, note the following rules:
Placement groups cannot be merged.
An instance can only be added to one placement group.
Spread placement group can be placed on physical machines, switches, or racks.
Placement groups support setting affinity levels across three tiers of physical machines, switches, and racks, with theaffinity range from 1 to 10. This represents the maximum number of instances that can be distributed at thecorresponding tier. While adhering to a relatively stringent dispersion policy, this approach also allows for a degree of
flexibility.

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The maximum number of instances supported by a spread placement group on a physical machine, switch, or rack isdifferent. For more information, see the official website.
If you specify and use the disaster recovery group policy, it will be strictly followed. Please note that if there is notenough hardware to distribute instances, the creation of some instances will fail.
Dedicated CVM instances cannot be added to a spread placement group.

Operation Guide
For more information on operations, see Spread Placement Group.

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Network Environment：

Last updated 2024-01-08 09:12:28
Tencent Cloud provides two network environments, Virtual Private Cloud (VPC) and classic network.
For Tencent Cloud accounts created after June 13, 2017, only VPC is available. We recommend you use a VPC for
the following reasons:Complete features: VPC covers all classic network features, while providing more flexible network services such as
custom IP range, routing, Direct Connect, VPN, NAT, etc.
Smooth migration: There is no completely smooth migration solution in the industry (the need to shut down, change
private IP, etc). If you need to use a VPC for business development later, the migration process may affect yourbusiness.

VPC and Classic Network
VPC
With Tencent Cloud’s Virtual Private Cloud (VPC), you can customize a logical isolated virtual network on the cloud.
Even in the same region, different VPCs cannot communicate with each other by default. Similar to the traditional
network that you run in your data center, your Tencent Cloud resources, including CVM, Cloud Load Balancer, andTencentDB for MySQL, are hosted on Tencent Cloud’s VPC to give you full control over the environment. For more
information on configuration and application scenarios, see VPC. The VPC helps you build more complex networkarchitecture and is suitable for those who are familiar with network management.

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Classic network
Classic network is the public network resource pool for all Tencent Cloud users. All your Tencent Cloud resources will
be centrally managed by Tencent Cloud.

Feature differences
FeatureClassic Network

VPC

Tenantassociation

Tenant association

Logical isolated network based on GRE
encapsulation

Not Supported

Supported

Routing
customization

Not Supported

Supported

Custom IP

Not Supported

Supported

Interconnection
rulesInterconnection is allowed for the sametenant in the same region

Cross-region and cross-accountinterconnection are supported

Security groups

Security groups and Network ACL

Network
customization

Security
control

Sharing Between Classic Network and VPC
Some Tencent Cloud resources and features support both the classic network and VPC, and can be shared oraccessed via the two different networks.
Resource

Description

Image

An image can be used to launch a CVM instance in any network environment

Elastic
Public IP

Elastic Public IPs can bind to a CVM instance under any network environment

Instances

Instances in the classic network and VPC can communicate with each other through the Public
IP or Classiclink

SSH Key

SSH key supports loading a CVM instance under any network environment

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Note:
A Cloud Load Balancer can not work on both the classic network and VPC, even if the VPC and the classic network
are interconnected.

Migrating from Classic Network to VPC
Please see Switch to VPC to migrate instances in the classic network to VPC.

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Private Network Access：

Last updated 2024-01-08 09:12:28
Private network services are LAN services, where cloud services can access each other through internal linkages.
Tencent Cloud services can access each other through internet access or the private network of Tencent Cloud.
Tencent Cloud data centers are interconnected with underlying networks of megabytes/gigabytes. They enablecommunications via private networks with large bandwidth and low latency, which are free of charge if in the same
region to help you build a network architecture flexibly.

Private IP Address
Overview
Private IPs are addresses that cannot be accessed through the Internet. Each instance has a default network interface(i.e., eth0) for assigning private IPs. Private IPs can be automatically assigned by Tencent Cloud, or you can specify
on your own (only for VPC environment).
Note:
If you change the private IP within the operating system, the private network may be interrupted.

Attributes
User-level isolation: The private networks of different users are isolated from each other. By default, cloud services ofdifferent accounts can not communicate over the private network.
Regional isolation: The private networks in different regions are isolated from each other. By default, cloud services
under the same account in different regions can not communicate over the private network.

Application Scenarios
Private IP can be used for the communication between CLBs and CVM instances, and between CVM instances andother Tencent Cloud services (such as TencentDB).

IP Allocation
Each CVM instance is assigned a default private IP address upon the launch. The private IP varies by the network
environment:
Classic network: private IP address is automatically assigned by Tencent Cloud and cannot be changed.
VPC: Tencent Cloud VPC CIDR currently allows you to use one of the following IP ranges, and the maximum:（minimum masks are /12 and /28）
172.16.0.0 - 172.31.255.255 （minimum masks are /12 and /28）
192.168.0.0 - 192.168.255.255 （minimum masks are /16 and /28）
10.0.0.0 - 10.255.255.255©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Private Network DNSDNS Server Address
Private network DNS service is used for domain name resolution. If DNS is configured incorrectly, domain namecannot be accessed.
Tencent Cloud provides reliable private network DNS servers in different regions. Specific configurations are shown
below:
Network
Environment

RegionClassic Network

Private Network DNS Server
Guangzhou Zone 1:
10.112.65.31
10.112.65.32
Guangzhou Zone 2:
10.112.65.31
10.112.65.32

Guangzhou
Guangzhou Zone 3:
10.59.218.193
10.59.218.194
Guangzhou Zone 4:
100.121.190.140
100.121.190.141
Shanghai

10.236.158.114
10.236.158.106

Beijing

10.53.216.182
10.53.216.198

NorthAmerica

10.116.19.188
10.116.19.185

Hong Kong,

10.243.28.52

China

10.164.55.3

Singapore

100.78.90.19
100.78.90.8

Guangzhou
Open Zone

10.59.218.18
10.112.65.51

Chengdu100.88.222.14©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

100.88.222.16
Silicon Valley

100.102.22.21
100.102.22.30

Frankfurt

100.120.52.60
100.120.52.61

Seoul

VPC

All Regions

10.165.180.53
10.165.180.62
183.60.83.19
183.60.82.98

Operation Guide
You can view or modify the private IP address of the instance. For detailed instructions, see:Getting Private IP Addresses and Setting DNS
Modifying Private IP Addresses©2013-2022 Tencent Cloud. All rights reserved.

Page 145 of 191

Cloud Virtual MachineInternet Access：

Last updated 2024-01-08 09:12:28
In order to host public-facing services on your CVM instance, which involves transmitting data over the Internet, youneed a public IP address. Tencent Cloud provides Internet access via high-speed connected networks of Tencent
Cloud IDC. The domestic multi-line BGP network covers more than 20 network operators and the public network
egress can implement cross-region switchover in a matter of seconds. This ensures that your users can enjoy a highspeed and secure network no matter which networks they use.

Public IP address
Overview: public IP addresses are non-reserved addresses on the Internet. A CVM with a public IP address canaccess other computers on the Internet and be accessed by other computers.
Obtaining a public IP address: set your bandwidth to more than 0 Mbps when creating your CVM instance. The
system automatically picks a public IP address from the public IP address pool and assigns it to your instance. Thisaddress can be changed later. For details, refer to Change Instance Public IP.
Configuring your CVM instance: you can log in to your CVM instance from a public network to configure it. For
more information, refer to Log in to Linux Instances and Log in to Windows Instances.
Translating your public IP address: you can map your public IP address to the private IP address of your CVM
instance using Network Address Translation (NAT).
Retrieving public IP address information: all Tencent Cloud public network interfaces are managed by Tencent
Gateway (TGW), which means all public network interfaces of all CVM instances are maintained by TGW. This
process is imperceptible to CVM instances. Therefore, when you run the command ifconfig on your Linux CVM
instance or ipconfig on your Windows CVM instance, you get private IP address information. For information
regarding your public IP addresses, log in to your CVM console and check instance detail pages.
Billing: using public IP addresses to offer services may incur fees. For details, refer to Public Network Billing
Methods.

Public IP Address Release
You cannot actively associate or release a public IP address that is already associated with an instance.
In the following cases, a public IP address associated with an instance is released or reassigned:
When you terminate an instance. Tencent Cloud releases a public IP address when you terminate an on-demand
CVM instance.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

When you associate or disassociate an Elastic Public IP with an instance. When you associate an EIP with yourinstance, the existing public IP address is released back into the public IP pool. When you disassociate an EIP fromyour instance, Tencent Cloud assigns a new public IP address to your instance. You will not be able to use your old
public IP address.
If you need a static public IP address, use an Elastic Public IP (EIP).

Operation Guide
For detailed instructions on how to obtain and change your public IP address, refer to:
Obtaining a Public IP Address of the Instance
Changing Your Public IP Address©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Elastic IP (EIP)：

Last updated 2024-04-10 14:28:59

Overview
Elastic IP (ElP) is a regional static IP designed for dynamic cloud computing. With EIP, you can quickly map an
address to another instance (or NAT gateway instance) in your account for failure isolation.
The lifecycle of a public IP is bound with a CVM, which means that the public IP is released when the associated CVM
is terminated. However, the lifecycle of an EIP is independent of the CVM. An EIP is always available under youraccount unless you release it. If you want to retain a public IP after the termination of the associated CVM, convert it toan EIP.

IP Address Type
Tencent Cloud supports various types of EIPs, such as general BGP IP, premium BGP IP, accelerated IP, and static
single-line IP.
General BGP IP: The domestic multi-line BGP network covers more than twenty ISPs (including the three major ISPs,
CERNET, and China Broadnet). The BGP public network outbound supports switchover across regions within
seconds, providing your users with high-speed and secure networks.
Premium BGP IP: Dedicated lines can avoid the use of international ISP services. The latency is lower, which
effectively improves the quality of overseas services for users in Chinese Mainland.
Accelerated IP: Anycast is used for acceleration to ensure more stable and reliable public network access with a low
latency.
Static single-line IP: Users can access the public network using services of a single ISP, featuring low cost andconvenient scheduling.
Anti-DDoS EIP: This type of GBP IP provides Tbps-level cloud-native DDoS protection capability and should be used
together with Anti-DDoS Pro for Enterprise. After the IP address is bound to business resources and Anti-DDoS Pro
resources, uses can enjoy the anti-DDoS capability.

IP Resource PoolIf certain adjacent IP addresses need to be reserved for your services or IP addresses in a specific network segment
should be allocated, you can submit a ticket for consultation. A dedicated IP resource pool will be assigned for you.
Dedicated resource pools are supported for general and premium BGP IPs and static single-line IPs currently.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

For the fees, please consult your business manager.

Public IP vs EIP
Both public IPs and EIPs are used of internet access.
Public IP: It is assigned automatically upon the creation of CVM and cannot be unbound from the CVM.
EIP: It’s purchased independently. It can be bound with/unbound from cloud resources (CVM, NAT gateway, ENI, andHAVIP) at any time.
Note:
Only general BGP IP lines are applicable for the current common public IP addresses.
For more details about EIPs, see IP Addresses.
Item

Public IP

EIP

Public network access✓✓

Independent lifecycle

×✓

Bind/unbind anytime

×✓

Adjust bandwidth1✓✓

Idle fee

×

✓

Note:
In the Public IP console, you can only adjust the bandwidth of EIPs. To adjust the bandwidth of public IPs, see
Adjusting Network Configuration.
EIPs can be decoupled from the lifecycle of the cloud resource and operate independently. For example, if you need tokeep a certain public IP that is strongly associated with your business, you can change it to an EIP and keep it in youraccount.

Rules and Limits
Use Rules
An EIP is applicable to instances in the basic network and VPC, and NAT gateway instances in VPC.
When you bind an EIP with a CVM instance, the original public IP is released at the same time.
When a CVM/NAT gateway instance is terminated, it will be disassociated from its EIP.
For details on EIP billing rules, see Elastic IP Billing.
For the step-by-step operations of EIPs, see Elastic IP.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Quota
Resource

Quota

EIPs/region

20

Daily purchase (times)

Regional EIP quota * 2

Public IPs assigned due to disassociation of EIPs/day

10

Note:
By default, the EIP quota cannot be adjusted. You can free some quota by converging IPs in NAT gateway and Cloud
Load Balancer.
If you do need to adjust the quota, submit a ticket or contact your sales rep.

Limits on public IPs bound to CVM
Note:
For CVM instances purchased before 00:00, September 18, 2019, the number of public IPs can be bound to each
instance is equal to the number of supported private IPs.
CPU cores

Public IPs + EIPs

1-5

2

6-11

3

12-17

4

18-23

5

24-29

6

30-35

7

36-41

8

42-47

9

≥ 48

10

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Elastic Network Interface (ENI)：

Last updated 2024-01-08 09:12:28
Elastic Network Interface (ENI) is an elastic network interface bound to CVMs in a VPC, which can be migrated
among multiple CVMs. ENI is very useful for configuring management networks and establishing highly reliablenetwork solutions.
ENI has VPC, availability zone and subnet attributes. You can only bind it to CVMs under the same availability zone. A
CVM can be bound with multiple ENIs, and the maximum number allowed varies by CVM specifications.

Concepts
Primary ENI and secondary ENI: The ENI created when creating the CVM in a VPC is the primary ENI, and thosecreated by users are secondary ENIs. The primary ENI does not support binding and unbinding, but secondary ENIs
do.
Primary private IP: The primary private IP of an ENI is randomly assigned by the system or customized by users
when the ENI is created. You can modify the primary private IP of the primary ENI, but not those of secondary ENIs.
Secondary private IP: The secondary private IPs bound to the ENI, other than the primary IP, are configured byusers when they create or modify the ENI. Users can also bind/unbind these IPs.
EIP: Bound with private IPs of an ENI one by one.
Security group: An ENI can be bound with one or more security groups.
MAC address: An ENI has a globally unique MAC address.

Applications
Isolation among private network, public network and management network:
Isolation among private network, public network and management network for secure data transmission is required forthe network deployment of key businesses. Different routing policies and security group policies can guarantee data
security and network isolation. Like a physical server, CVM can be bound with ENIs residing in different subnets toachieve isolation among three networks.
Highly reliable application deployment:
The high availability of key components in the system architecture is ensured through multi-server hot backup.
Tencent Cloud provides ENIs and private IPs that can be flexibly bound and unbound. You can configure Keepalived
disaster recovery to achieve highly available deployment of key components.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

LimitsBased on CPU and memory configurations, the number of ENIs bound to a CVM differs from the number of private IPs
bound to an ENI. The quotes are as shown below:
Caution:
The number of IPs that can be bound to a single ENI indicates the upper limit of IPs bound only. The EIP use limits,rather than the upper limit, determines the actual EIP quota.
Number of ENIs bound to a CVM instance
Number of private IPs bound to a single ENI on CVM instances
Number of ENIs
Model

Standard

Instance
Type

CPU:
1

CPU:
2

CPU:
4

CPU:
6

CPU:
8

CPU:
10

CPU:
12

CPU:
14

CPU
16

core

cores

cores

cores

cores

cores

cores

cores

core

2

4

4

-

6

-

-

-

8

-

-

4

-

6

-

-

-

8

2

4

4

-

6

-

-

-

8

2

4

4

-

6

-

-

-

8

2

4

4

-

6

-

8

-

8

Standard
S3

2

4

4

-

6

-

8

-

8

Standard
SA1

2

2

4

-

6

-

-

-

8

2

4

4

-

6

-

8

-

8

2

4

4

-

6

-

8

-

8

Standard
S5
Standard
Storage
Optimized
S5seStandard
SA2
Standard
S4
Standard
Networkoptimized
SN3neStandard
S2
Standard
S1©2013-2022 Tencent Cloud. All rights reserved.

Page 152 of 191

Cloud Virtual MachineHigh IO IT5

-

-

-

-

-

-

-

-

8

High IO IT3

-

-

-

-

-

-

-

-

8

MemoryOptimized
M5

2

4

4

-

6

-

8

-

8

2

4

4

-

6

-

8

-

8

2

4

4

-

6

-

8

-

8

2

4

4

-

6

-

8

-

8

2

4

4

-

6

-

8

-

8

-

-

4

-

6

-

-

-

8

-

-

4

-

6

-

-

-

8

-

-

4

-

6

-

-

-

8

Compute
C2

-

-

4

-

6

-

-

-

8

GPU
Compute
GN2

-

-

-

-

-

-

-

-

-

GPU
Compute
GN6

-

-

-

-

-

-

-

-

-

High IO

MemoryOptimized
M4
MEM
Optimized

MemoryOptimized
M3
MemoryOptimized
M2
MemoryOptimized
M1
ComputeOptimized
C4
ComputeComputeNetworkoptimized
CN3
ComputeC3

GPUbased©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

GPU

-

-

4

-

6

-

-

-

-

-

-

4

-

6

-

-

-

-

GPU
Compute
GN8

-

-

-

4

-

-

-

8

-

GPU
Compute
GN10X

-

-

-

-

6

-

-

-

-

GPU
ComputeGN10Xp

-

-

-

-

-

6

-

-

-

-

-

-

-

-

6

-

-

-

Big Data
D3

-

-

-

-

6

-

-

-

8

Big Data
D2

-

-

-

-

6

-

-

-

8

Big Data
D1

-

-

-

-

6

-

-

-

-

CPU:
6

CPU:
8

CPU:
10

CPU:
12

CPU:
14

cores

cores

cores

cores

cores

-

20

-

-

-

ComputeGN6SGPUComputeGN7

FPGAbased

Big Data

FPGA
Accelerated
FX4

Cloud Physical Machine
2.0

Not supported

Number of private IPs bound to a single ENI
ModelInstance
Type

CPU: 1coreStandard

Standard
S5

6©2013-2022 Tencent Cloud. All rights reserved.

CPU:
2
cores
10

CPU: 4cores

10Page 154 of 191

Cloud Virtual MachineStandard
Storage
Optimized
S5se

-

-

20

-

20

-

-

-

6

10

10

-

20

-

-

-

Standard
S4

6

10

10

-

20

-

-

-

Standard
Networkoptimized
SN3ne

6

10

10

-

20

-

30

-

Standard
S3

6

10

10

-

20

-

30

-

-

20

-

-

-

Standard
SA2

8 GB
memory:1 GB
Standard
SA1

memory:2>1 GBmemory:
6

10

1016
GB
memory:20Standard
S2

6

10

10

-

20

-

30

-

Standard
S1

6

10

10

-

20

-

30

-

High IO IT5

-

-

-

-

-

-

-

-

High IO IT3

-

-

-

-

-

-

-

-

MemoryOptimized
M5

6

10

10

-

20

-

30

-

MemoryOptimized
M4

6

10

10

-

20

-

30

-

6

10

10

-

20

-

30

-

High IO

MEM
Optimized

MemoryOptimized
M3©2013-2022 Tencent Cloud. All rights reserved.

Page 155 of 191

Cloud Virtual Machine

MemoryOptimized
M2

6

10

10

-

20

-

30

-

6

10

10

-

20

-

30

-

-

-

10

-

20

-

-

-

-

-

10

-

20

-

-

-

Compute
C3

-

-

10

-

20

-

-

-

Compute
C2

-

-

10

-

20

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

10

-

20

-

-

-

-

-

10

-

20

-

-

-

-

-

-

10

-

-

-

30

Compute
GN10X

-

-

-

-

20

-

-

-

GPU

-

-

-

-

-

20

-

-

MemoryOptimized
M1
ComputeOptimized
C4

ComputeGPUbasedComputeNetworkoptimized
CN3

GPU
ComputeGN2
GPU
Compute
GN6
GPU
ComputeGN6SGPUCompute
GN7
GPU
ComputeGN8
GPU©2013-2022 Tencent Cloud. All rights reserved.

Page 156 of 191

Cloud Virtual Machine

ComputeGN10XpFPGAbased

Big Data

FPGA
Accelerated

-

-

-

-

-

20

-

-

Big Data
D3

-

-

-

-

20

-

-

-

Big Data
D2

-

-

-

-

20

-

-

-

-

-

-

-

20

-

-

-

FX4

Big Data
D1
Cloud Physical Machine
2.0

Not supported

API Overview
The APIs related to the ENI and CVM are shown in the following table. For more information, see API Category.
FeatureAction ID

Description

Create ENI

CreateNetworkInterface

Create an ENI

Assign Private IP for ENI

AssignPrivateIpAddresses

Assign a private IP for an ENI

Bind ENI to CVM

AttachNetworkInterface

Bind an ENI to a CVM©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Login Password：

Last updated 2024-01-08 09:12:28
The password is a unique login credential for the CVM instance. To ensure instance security, Tencent Cloud provides
the following two encrypted login methods:
Password login
SSH key login
When creating the CVM, you can refer to the following documents to choose different encrypted login methods basedon your CVM operating system.
Custom Configuration for Windows CVM
Custom Configuration for Linux CVM
Anyone with an instance login password can log into the CVM instance remotely through a public network address
allowed by the security group. Therefore, we recommend you use a secure password and change it periodically.
For more password-related operations, please see Manage Login Password.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

SSH Keys：

Last updated 2024-01-08 09:12:28
To ensure the security and reliability of instances, Tencent Cloud provides users with two encrypted login methods,
password and SSH key pair. This document describes how to log in with an SSH key pair.
You can select SSH key pair as the encrypted CVM login method when Customizing Linux CVM Configurations.

SSH Key Overview
We recommend using SSH key pair to log in to a Linux instance. A key pair contains a public key and a private key.
It is generated with RSA 2048-bit encryption method.
Public key: When the SSH key pair is generated, Tencent Cloud only stores the public key, and save it in the~/.ssh/authorized_keys file.
Private key: You need to download the private key and keep it secretly. The private key can only be downloaded
once. Tencent Cloud will not keep your private key. Anyone with your private key can access your instance. Be sure tokeep it safe.
You can use the key pair to connect to CVM securely. This method is more secure than logging in with a password.
You only need to specify the key pair when creating a Linux instance, or bind key pair to an existing instance, so thatyou can use the private key to log in to the instance without entering a password.

Features and Advantages
Compared to traditional password authentication methods, SSH key pair login has the following advantages:
SSH key pair login is more complex and difficult to brute-force.
SSH key pair login is easier to use. You can log in to instances remotely with a few simple configuration steps on the
console and your local client, and do not need to enter a password when you log in again.

Use Limits
SSH key pair login is only available for Linux instances.
Each Tencent Cloud account can have up to 100 SSH key pairs.
Tencent Cloud will not retain your private key. You need to download the private key after creating an SSH key, andkeep it safe.
To ensure data security, you need to shut the instance down before loading the key.
To improve CVM security, you cannot use the password login method after binding a key pair to the instance.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Use Cases
To learn how to create, bind, unbind, or delete a key, see Managing SSH Key Pairs.
To learn about how to log in to CVM instances remotely using an SSH key pair, seeLogging in to Linux Instances via Remote Login Tools
Logging in to Linux Instance via SSH Key©2013-2022 Tencent Cloud. All rights reserved.

Page 160 of 191

Cloud Virtual Machine

Cloud Workload Protection Platform：

Last updated 2024-01-08 09:12:28

Overview（

Based on Tencent Security's massive amounts of threat data, Tencent Cloud Workload Protection Platform CWPP)
leverages machine learning to provide a wide variety of security services ranging from intrusion detection tovulnerability alerting. It offers various security features such as brute force attack prevention, unusual login location
reminding, trojan protection, and high-risk vulnerability detection, helping build a security protection system to copewith major network security risks faced by servers and prevent data leakage.
CWPP is available in Basic and Pro editions. When creating a CVM instance, you can choose to activate CWPP Basicby default.
Note:
For more information on the features of CWPP Basic and Pro editions and their differences, see Features in Different
Editions.

Billing Mode
CCWPP Basic is free of charge.

Installing CWPP Basic
You can install CWPP Basic in one of the following methods based on the actual conditions:
Automatic installation during CVM instance creation
Manual installation for existing CVM instance
When creating a CVM instance, you can choose to activate CWPP Basic by default. On the CVM instance purchasepage, select Enable for Free for Security Reinforcement to automatically install CWPP as shown below:

You can use one of the following methods to install CWPP for an existing instance based on its operating system:
Windows CVM environment©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Linux CVM environment
After successful installation, you can view the security status of the CVM instance on the overview page in the CVM
console or in the CWPP console.

See Also
Features in Different Editions
Security Overview©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Anti-DDoS Basic：

Last updated 2024-01-08 09:12:28

Overview
Anti-DDoS Basic provides CVM, CLB and other resources with free basic protection capability to meet your daily
security protection needs. Tencent Cloud will dynamically adjust the blocking threshold according to your security
reputation score. Anti-DDoS Basic is enabled by default to monitor network traffic in real time, cleanse attack traffic
once detected, and start protection for Public IPs on Tencent Cloud within seconds.

Billing Mode
Anti-DDoS Basic service is free of charge. For details on other DDoS protection schemes, see Comparison of AntiDDoS Protection Schemes.

Enabling Anti-DDoS Basic
Tencent Cloud CVM can enable Anti-DDoS Basic for free by default when creating an instance. You can click"Security Reinforcement" on the CVM instance purchase page and check "Free Enablement" to enable Anti-DDoS
Basic.
After Anti-DDoS Basic is enabled, you can view the protection configuration of CVM on the Overview Page of CVM
Console or Anti-DDoS Basic page of DDOS protection console.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

OPS and Monitoring
Health Check：

Last updated 2024-01-08 09:12:28

Overview
Health check can check the status of performance, fees, network, and disk utilization of a CVM instance. With thisfeature, you can discover and solve instance problems promptly.

Use Cases
We recommend you use health check in the following two scenarios:
Troubleshooting: If any failure or problem occurs during instance operations, you can run a health check to locate andtroubleshoot it.
All-around instance check: During daily Ops, health check can help you keep up to date with the overall instancerunning status.

Check Item Description
The health check items are as detailed below:
Local network
Check Item

Network latency

Description

RiskLevel

Solution

An HTTP request is sent to check whether
the network latency of the instance is highCheck your local
network and solve thebased on the following criteria:

problem.

If the latency is above 600 ms, the network
quality is considered poor.

Exception

If no response is received within 5s, therequest is considered timed out.
If all requests time out, the network is
considered disconnected.
Network jitter

The average of the differences between
the latency values of adjacent requests is-the network jitter value. If the network©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

jitter/latency is below or equal to 0.15, thenetwork is stable; otherwise, the network
is jittering.
Data packets are uploaded to the instanceto calculate its upstream bandwidth.

Upstream bandwidth-

Data packets are downloaded from theDownstream

instance to calculate its downstream
bandwidth.

bandwidth-

Security group
Check Item

Commonports

Description

RiskLevel

Solution

Checks whether requests to

If requests to port 22 used by the TCP

common ports such as ports 22
and 3389 used by the TCP

protocol are blocked in an ingress rule inthe security group, SSH login may be

protocol for the inbound traffic
are blocked in the security

Warninggroup.

abnormal. You can open the required
ports as instructed in Security Group Use
Cases.

Billing
Check Item

Description
Checks whether cloud disks
associated with the instancehave expired and whether they

Cloud disk
statusRiskLevel

A cloud disk associated with the instance
Exception

can be read/written.
Checks whether cloud disks
associated with the pay-asyou-go instance are

Solution

has expired. Go to the CBS console torenew it as soon as possible.
Auto-Renewal is not enabled for the cloud

Warning

unavailable due to expiration.

disks attached to the instance. Go to the
CBS console to configure auto-renewal
for the cloud disk.

Instance storage
Check Item

Description

High cloud disk

Checks whether the I/O©2013-2022 Tencent Cloud. All rights reserved.

Risk
Level
Warning

Solution
A cloud disk associated with thePage 165 of 191

Cloud Virtual Machinelatency

performance metric svctm is

instance has a high latency. We

abnormal.

recommend you pay attention to thecloud disk usage.
A cloud disk associated with the

Cloud disk I/O

Checks for cloud disk I/Ohang

Warning

instance has an I/O hang. We
recommend you pay attention to thecloud disk usage.

System disk inodeutilization

Checks whether the inodeutilization of the cloud disk
has reached 100%.

System disk read-

Checks whether the cloud

only

disk is read-only.

System disk space
utilization

Partition I/Outilization

Warning

Exception
Pay attention to the cloud disk usage

Checks whether theutilization of the cloud disk

Warning

and troubleshoot as instructed in Kernel
and I/O Issues.

has reached 100%.
Checks whether the io_util ofthe cloud disk has reached100%.

Warning

Instance status
Check Item
Instance shutdown

Instance restart

Description
Checks whether the
instance is shut down.
Checks whether the
instance has been

history

restarted in the last 12
hours.

Instance kernel

Checks whether a hungcrashtask has occurred in the
instance in the last 12

RiskLevel
Warning

Solution
The instance is shut down. Go to the CVM
console to start it up.
The instance has been restarted in the lastWarning

12 hours. Pay attention to the instancerunning status.
A hung task, panic, or soft deadlock has

Exception

hours.

occurred in the instance in the last 12
hours. Pay attention to the instance runningstatus and troubleshoot as instructed in
Kernel and I/O Issues.

Checks whether a panic
has occurred in the
instance in the last 12

Exception

hours.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Checks whether a soft
deadlock occurred in the

Exception

instance in the last 12
hours.

Instance performance
Check Item

Description

RiskLevel

Solution

Warning

Check your CPU utilization and adjust theconfiguration according. Troubleshoot it as

Checks whether the
CPU utilization

instance has experienced
a high CPU utilization in
the last 12 hours.

instructed below:

Checks whether the
Memoryinstance has experienced

utilizationa high memory utilizationin the last 12 hours.

Basic CPUutilization

Checks whether the
instance has experienced
a high CPU utilization in
the last 12 hours.

Warning

Windows instance: Login Failure Due To
High CPU and Memory Usage (Windows)
Linux instance: Login Failure Due To HighCPU and Memory Usage (Linux)

Warning

Instance network
Check Item

Description

Public EIP

Checks whether the EIP
is isolated due toconnection

Existence of EIP

RiskLevel

Exception

overdue payments.

Checks whether the
instance has an EIP.

Warning

Checks whether the EIP

Solution
An EIP may be disconnected from thepublic network due to overdue
payments. You need to go to the Billing
Center to make the overdue payment.
The instance has no EIPs. If you want touse an EIP to access the public
network, go to the EIP console to bindone.

EIP blockedis blocked due to DDoS
attacks

Exception

An instance EIP is blocked due to DDoS
attacks.

Public network

Checks whether theWarning

Check the network usage andbandwidth utilization

instance has©2013-2022 Tencent Cloud. All rights reserved.

troubleshoot as instructed in Login

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Cloud Virtual Machine

experienced a highpublic network inboundFailure Due to High Bandwidth
Utilization.

bandwidth utilization in
the last 12 hours.
Checks whether the
instance has
experienced a highpublic network outboundbandwidth utilization in

Warning

the last 12 hours.
Checks whether the
instance has
experienced a highprivate network inboundPrivate network
bandwidth utilization

Warning

bandwidth utilization in
the last 12 hours.
Checks whether the
instance has
experienced a highprivate network outboundbandwidth utilization in

Warning

the last 12 hours.
Checks whether the
instance has
experienced TCP packet
loss due to triggering of

Check the traffic to your application. For
more information, see Network Packet
WarningLoss.

traffic throttling in the last
12 hours.
Checks whether the
instance has
Packet loss

experienced UDP packet
loss due to triggering oftraffic throttling in the lastWarning

12 hours.
Checks whether the
instance has
experienced packet loss

Warning

due to a soft interrupt in
the last 12 hours.
Kernel network

Checks whether the©2013-2022 Tencent Cloud. All rights reserved.

Warning

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Cloud Virtual Machineconditions

instance has
experienced a full UDP
send buffer in the last 12
hours.
Checks whether the
instance has
experienced a full UDP
receive buffer in the lastWarning

12 hours.
Checks whether the
instance has
experienced a full TCP
complete connection

Warningqueue in the last 12
hours.
Checks whether the
instance has
experienced TCP

Warning

request overflow in thelast 12 hours.

Connection
utilization

Checks whether thenumber of connections of
the instance has reachedthe upper limit in the lastWarning

12 hours.

Related Operations
You can generate an instance detection result report or view historical reports as instructed in Checking Instance
Status.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Monitoring & Alarming：

Last updated 2024-01-08 09:12:28
Monitoring and Alarming help ensure high reliability, availability and performance of CVMs. When you create a
CVM, Cloud Monitor will be activated for free by default, through which you can analyze and implement alarms andget CVM monitoring metrics.
This document describes the CVM monitoring and alarm features. For more information, see the Cloud Monitor
documentation .

Overview
CVM Monitoring and Alarming displays complete monitoring data of different CVM key metrics in real time. With thisfeature, you can have a comprehensive understanding of the resource usage, performance, and running status of the
CVM instance. You can also configure custom alarm thresholds and notification rules.

Basic Features
You can access the following CVM monitoring and alarms features in the Cloud Monitor console:
Component

Capability

Main Features

Monitor

Displays the overall monitoring

Provides the overall information and alarms for

Overview

information for Tencent Cloud services

Tencent Cloud services

Alarm Policy

Displays the custom alarm policy list

Supports alarm configuration for CVM

Cloud Virtual

Displays the specific CVM monitoring

Machineinformation

Dashboard

Displays the custom monitoring
dashboard

CustomMonitoring
Traffic
Monitoring

Displays the custom monitoring metrics

Displays the traffic monitoring

Allows you to view the CVM monitoring data
Graphically displays monitoring data to facilitate
the dynamic metric analysis
Allows you to view the predefined custom
monitoring metrics and reported data
Allows you to view your overall bandwidth usage

For more information about Cloud Monitor, see Product Overview.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Overview
Daily management: log in to the Cloud Monitor console and view the running status of each monitored product.
Troubleshooting exceptions: Cloud Monitor will send you alarm notifications promptly when the monitoring datareaches the alarm threshold so that you can troubleshoot the issue.
Timely expansion: you can configure alarm policies for bandwidth, number of connections, disk utilization and othermonitoring items to check the overall status of your Tencent Cloud services. You will receive alarm notifications whenbusiness surges and can expand your CVMs accordingly.

Monitoring Items
To monitor instance performance benchmarks, you should monitor at least the following items. You can go to the CVM
console to obtain related monitoring information on the instance details page.
Monitoring Item

Monitoring Metric

Description
CPU usage ratio. The data is collected and reported by the

CPU usage

cpu_usageinternal monitoring component of the server, making the data
more accurate.
The ratio of the actual amount of memory used by the user toMemory utilization

mem_usage

the total amount of memory, excluding the memory occupiedby buffer and system cache.

Private network
outbound bandwidth

lan_outtraffic

Average outbound traffic per second of private ENI.

lan_intraffic

Average inbound traffic per second of private ENI.

Private network
inbound bandwidth

Average outbound traffic per second over the public network.
Public network
outbound bandwidth

wan_outtraffic

The minimum granularity for bandwidth statistics is 10
seconds (bandwidth calculation method: total traffic in 10
seconds divided by 10 seconds).

Public network inboundbandwidth

wan_intraffic

Average inbound traffic per second of the public network.

Disk usage

disk_usage

Disk usage.

Disk I/O wait time

disk_io_await

Average wait time per disk I/O operation.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Monitoring Data
Monitoring interval: Cloud Monitor provides monitoring data at different statistical granularities, including 1 minute, 5
minutes, 1 hour, and 1 day. CVM supports the monitoring granularity of 1 minute, meaning data is collected every 1minute. The default interval is 5 minutes.
Data storage: monitoring data at a 1-minute, 5-minute, and 1-hour granularity will be retained for 31 days; monitoringdata at a 1-day granularity will be retained for half a year.
Alarm display: data is displayed in easy-to-read charts. The Cloud Monitor console displays the monitoring data of all
products to give you a comprehensive overview of their running status.
Alarm settings: you can set limits for monitoring metrics. When the condition is met, alarm notification will be sent to
the recipient group promptly. For more information, see Configuring Alarm Policies.
Dashboard settings: you can create a monitoring metric dashboard to dynamically analyze abnormal metrics andview the metric change in real time for prompt resource expansion. For more information, see Creating a Dashboard.

©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Access Management
Access Control Overview：

Last updated 2024-01-08 09:12:28
If you use multiple Tencent Cloud services such as Cloud Virtual Machine (CVM), VPC, and TencentDB, it is likely
they are managed by different users who all your account key. This presents the following challenges:
Your key is shared by multiple users, leading to high risk of compromise.
You cannot restrict user access to different resources, which poses a security risk due to potential misoperations.
You can use sub-accounts to solve these issues. Sub-accounts allow you to assign each user a different account sothey can perform their duties without the risk of interfering with others. However, sub-accounts by default do not havethe permission to access CVM instances and related resources. You need to create appropriate policies for each subaccount to grant them access.
Tencent Cloud provides a web service called Cloud Access Management (CAM) to help customers securely manage
access to their resources under their Tencent Cloud accounts. CAM allows you to create, manage, or terminate users
and user groups, and provides identity management and policy management to control who is allowed to access anduse your Tencent Cloud resources.
You can associate CAM policies with a user or a user group to grant or deny them permissions to use specificresources to perform specific tasks. For more information on CAM policy, see Policy Syntax. For more information on
how to use CAM policies, see Policies.
If you do not need to manage multi-user resource access, you can skip this section. Doing so does not affect yourunderstanding of the rest of the article.
Getting started
A CAM policy must allow or deny one or more CVM operations, as well as the resources these actions target. A policy
can also include the conditions governing the use of resources.
Some of the CVM APIs do not support resource-level permissions, which means that you must specify all resources,
rather than specific resources, when performing such API operations.
Task

Link

Learn more about the basic policy structure

Policy Syntax

Define operations in the policy

CVM Operations

Define resources in the policy

CVM Resource Path

Limit the policy with conditions

CVM Condition Keys

Resource-level permissions supported by CVM

Resource-level Permissions Supported by CVM©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

Console samples©2013-2022 Tencent Cloud. All rights reserved.

Console Samples

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Cloud Virtual Machine

Authorizable Resource Type：

Last updated 2024-01-08 09:12:28
Resource-level permission refers to the ability to specify which resources users are allowed to operate on. Cloud
Virtual Machine(CVM) has partial support for resource-level permission. This means that for certain CVMs, you cancontrol when users are allowed to operate on them, and what specific resources users are allowed to use. For
example, you authorize users to perform operations on specific CVMs in Guangzhou.
The types of resources can be authorized in Cloud Access Management (CAM) are as follows:
Resource Type

Resource Description Method in Authorization Policy

CVM Instance

qcs::cvm:$region::instance/*

CVM Keyqcs::cvm:$region::keypair/*

CVM Imageqcs::cvm:$region:$account:image/*

CVM Instance, CVM Key and CVM Image introduce CVM API operations that currently support resource-level
permission, as well as resources and condition keys supported by these CVM API operations. When configuring theresource path, you need to change variable parameters such as $ region ,$ account into your actual

parameter information. You can also use wildcard * in the path. For more information, see Operation Examples.
Note:
CVM API operations not listed in the table do not support resource-level permission. You can still authorize a user toperform these operations, but you must specify * as the resource element in the policy statement.
CVM Instance
API Operation

DescribeInstanceInternetBandwidthConfigs

ModifyInstanceInternetChargeType

ModifyInstancesAttribute

ModifyInstancesProject

Resource Path
qcs::cvm:$region:$account:instance/*
qcs::cvm:$region:$account:instance/$instanceId

qcs::cvm:$region:$account:instance/*
qcs::cvm:$region:$account:instance/$instanceId

qcs::cvm:$region:$account:instance/*
qcs::cvm:$region:$account:instance/$instanceId
qcs::cvm:$region:$account:instance/*
qcs::cvm:$region:$account:instance/$instanceId©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

ModifyInstancesRenewFlag

RebootInstances

RenewInstances

qcs::cvm:$region:$account:instance/*
qcs::cvm:$region:$account:instance/$instanceId

qcs::cvm:$region:$account:instance/*
qcs::cvm:$region:$account:instance/$instanceId

qcs::cvm:$region:$account:instance/*
qcs::cvm:$region:$account:instance/$instanceId

qcs::cvm:$region:$account:instance/*
qcs::cvm:$region:$account:instance/$instanceId
qcs::cvm:$region:$account:image/*
ResetInstance

qcs::cvm:$region:$account:image/$imageId
qcs::cvm:$region:$account:keypair/*qcs::cvm:$region:$account:keypair/$keyId
qcs::cvm:$region:$account:systemdisk/*

ResetInstancesInternetMaxBandwidth

ResetInstancesPassword

ResetInstancesType

ResizeInstanceDisksRunInstances

qcs::cvm:$region:$account:instance/*
qcs::cvm:$region:$account:instance/$instanceId

qcs::cvm:$region:$account:instance/*
qcs::cvm:$region:$account:instance/$instanceId

qcs::cvm:$region:$account:instance/*
qcs::cvm:$region:$account:instance/$instanceId

qcs::cvm:$region:$account:instance/*
qcs::cvm:$region:$account:instance/$instanceId

qcs::cvm:$region:$account:instance/*
qcs::cvm:$region:$account:image/*
qcs::cvm:$region:$account:image/$imageId
qcs::cvm:$region:$account:keypair/*qcs::cvm:$region:$account:keypair/$keyId
qcs::cvm:$region:$account:sg/*
qcs::cvm:$region:$account:sg/$sgId
qcs::vpc:$region:$account:subnet/*©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

qcs::vpc:$region:$account:subnet/$subnetId
qcs::cvm:$region:$account:systemdisk/*
qcs::cvm:$region:$account:datadisk/*
qcs::vpc:$region:$account:vpc/*
qcs::vpc:$region:$account:vpc/$vpcId
qcs::cvm:$region:$account:instance/*

StartInstances

qcs::cvm:$region:$account:instance/$instanceId

qcs::cvm:$region:$account:instance/*

StopInstances

qcs::cvm:$region:$account:instance/$instanceId

qcs::cvm:$region:$account:instance/*

TerminateInstances

qcs::cvm:$region:$account:instance/$instanceId

CVM Key
API Operation

ConditioKey

Resource Path

qcs::cvm:$region:$account:instance/*
AssociateInstancesKeyPairs

qcs::cvm:$region:$account:instance/$instanceId
qcs::cvm:$region:$account:keypair/*-qcs::cvm:$region:$account:keypair/$keyId
CreateKeyPair
DeleteKeyPairs
DescribeKeyPairs
DescribeKeyPairsAttribute-qcs::cvm:$region:$account:keypair/*qcs::cvm:$region:$account:keypair/*-qcs::cvm:$region:$account:keypair/$keyId-

qcs::cvm:$region:$account:keypair/*qcs::cvm:$region:$account:keypair/*-qcs::cvm:$region:$account:keypair/$keyId
qcs::cvm:$region:$account:instance/*

DisassociateInstancesKeyPairs

qcs::cvm:$region:$account:instance/$instanceId
qcs::cvm:$region:$account:keypair/*-qcs::cvm:$region:$account:keypair/$keyId
ImportKeyPair

qcs::cvm:$region:$account:keypair/*-

ModifyKeyPairAttributeqcs::cvm:$region:$account:keypair/*-©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

qcs::cvm:$region:$account:keypair/$keyId

CVM Image
API Operation

ConditioKey

Resource Path
qcs::cvm:$region:$account:instance/*

CreateImage

qcs::cvm:$region:$account:instance/$instanceId

cvm:reg

qcs::cvm:$region:$account:image/*
DeleteImages
DescribeImages
DescribeImagesAttribute
DescribeImageSharePermission
ModifyImageAttribute

ModifyImageSharePermission

SyncImages

qcs::cvm:$region:$account:image/*
qcs::cvm:$region:$account:image/$imageId
qcs::cvm:$region:$account:image/*
qcs::cvm:$region:$account:image/*
qcs::cvm:$region:$account:image/$imageId
qcs::cvm:$region:$account:image/*
qcs::cvm:$region:$account:image/*
qcs::cvm:$region:$account:image/$imageId
qcs::cvm:$region:$account:image/*
qcs::cvm:$region:$account:image/$imageId
qcs::cvm:$region:$account:image/*
qcs::cvm:$region:$account:image/$imageId©2013-2022 Tencent Cloud. All rights reserved.

cvm:reg
cvm:reg
cvm:reg
cvm:reg
cvm:reg

cvm:reg

cvm:reg

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Cloud Virtual Machine

Authorization Policy Syntax：

Last updated 2024-01-08 09:12:28

Policy Syntax
CAM policy:{"version":"2.0","statement":©2013-2022 Tencent Cloud. All rights reserved.

Page 179 of 191

Cloud Virtual Machine[{"effect":"effect","action":["action"],"resource":["resource"],"condition": {"key":{"value"}}}]}version is required. Currently, only "2.0" is supported.
statement describes the details of one or more permissions. This element contains a permission or permission set
consisting of other elements such as effect, action, resource, and condition. One policy has only one statement.
1.1 effect describes whether the result produced by the statement is "allowed" (allow) or "denied" (deny). Thiselement is required.
1.2 Action describes the allowed or denied actions. An action can be an API (described using the prefix "name") or afeature set (a set of specific APIs, described using the prefix "permit"). This element is required.
1.3 resource describes the authorization details. A resource is described in a six-piece format. Detailed resource
definitions vary by product. For more information on how to specify a resource, see the documentation for the relevant
product. This element is required.
1.4 condition describes the condition for the policy to take effect. A condition consists of operator, action key, andaction value. A condition value may contain information such as time and IP address. Some services allow you to
specify additional values in a condition. This element is optional.

CVM Operations
A CAM policy allows you to perform API operations in any Tencent Cloud service that supports CAM. For CVM, use
the prefix name/cvm: with any API, such as name/cvm:RunInstances orname/cvm:ResetInstancesPassword .
To specify multiple actions in a single statement, separate them with commas, as shown below:©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine"action":["name/cvm:action1","name/cvm:action2"]
You can also specify multiple actions using a wildcard. For example, you can specify all APIs whose names begin with
"Describe", as shown below:©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine"action":["name/cvm:Describe*"]To specify all CVM operations, use the wildcard "*" as follows:©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine"action": ["name/cvm:*"]

CVM Resource Path
Each CAM policy defines its own resources.
The general format of resource paths is as follows:©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine

qcs:project_id:service_type:region:account:resource
project_id: project information, which is only used for compatibility purposes and can be left blank.
service_type: abbreviation of a product, such as CVM.
region: region of the resource, such as bj.
account: the root account of the resource owner, such as uin/164256472.
resource: detailed resource information of each product, such as instance/instance_id1 or instance/*.
For example, you can specify a specific instance (i-15931881scv4) in the statement as follows:©2013-2022 Tencent Cloud. All rights reserved.

Page 184 of 191

Cloud Virtual Machine"resource":[ "qcs::cvm:bj:uin/164256472:instance/i-15931881scv4"]
You can also use the wildcard "*" to specify all instances that belong to a specific account as shown below:©2013-2022 Tencent Cloud. All rights reserved.

Page 185 of 191

Cloud Virtual Machine"resource":[ "qcs::redis:bj:uin/164256472:instance/*"]If you want to specify all resources or if any API operation does not support resource-level permissions, you can use
wildcard "*" in resource as shown below:©2013-2022 Tencent Cloud. All rights reserved.

Page 186 of 191

Cloud Virtual Machine"resource":["*"]To specify multiple resources in one instruction, separate them with commas. In the following example, two resources
are specified:©2013-2022 Tencent Cloud. All rights reserved.

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Cloud Virtual Machine"resource":["resource1","resource2"]
The following table describes CVM resources and the corresponding resource description methods.
In the following table, names with the prefix $ are placeholders.
$project is the ID of the project.
$region is the region of the resource.
$account is the ID of the account.
Resource

Syntax©2013-2022 Tencent Cloud. All rights reserved.

Page 188 of 191

Cloud Virtual Machine

Instance

qcs::cvm:$region:$account:instance/$instanceId

Key

qcs::cvm:$region:$account:keypair/$keyId

VPC

qcs::vpc:$region:$account:vpc/$vpcId

Subnetqcs::vpc:$region:$account:subnet/$subnetId

Image

qcs::cvm:$region:$account:image/*CBS

qcs::cvm:$region:$account:volume/$diskid

Security groupqcs::cvm:$region:$account:sg/$sgId

EIP

qcs::cvm:$region:$account:eip/*

CVM Condition Keys
You can use conditions to specify the conditions under which policies take effect. Each condition consists of one ormore key pairs. These are not case-sensitive.
If you specify multiple conditions or multiple keys in one condition, they are connected with the logical operator "AND".
If you specify a key with multiple values in one condition, they are connected with the logical operator "OR".
The following table describes CVM condition keys for specific services.
Condition key

Referencetype

Key pair
cvm:instance_type= instance_type

cvm:instance_type

Stringinstance_type is the model of the CVM instance, such as
S1.SMALL1.

cvm:image_type

Stringvpc:region

Stringcvm:disk_size

Integer

cvm:disk_type

Stringcvm:image_type= image_type
image_type is the type of the image, such as IMAGE_PUBLIC.

vpc:region= region
region is the region of the CVM instance, such as ap-guangzhou.

cvm:disk_size= disk_size
disk_size is the size of the disk, such as 500.

cvm_disk_type= disk_type©2013-2022 Tencent Cloud. All rights reserved.

disk_type is the type of the disk, such as CLOUD_BASIC.

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Cloud Virtual Machine

cvm:region= region
cvm:region

String©2013-2022 Tencent Cloud. All rights reserved.

region is the region of the CVM instance, such as ap-guangzhou.

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Cloud Virtual Machine

APIs Supporting CAM：

Last updated 2024-01-08 09:12:28

Basic information
Product Name

Abbreviation

Authorization Granularity

Cloud Virtual Machine

CVM

Resource-level

Note:
Three authorization granularity levels are supported by the Tencent Cloud product: service level, operation level, andresource level.
Service level: It defines whether a user has the permission to access the service as a whole. A user can have either
full access or no access to the service. The Tencent Cloud product at the service level doesn't support authorization of
specific APIs.
Operation level: It defines whether a user has the permission to call a specific API of the service. For example,
granting an account read-only access to the CVM service is an authorization at the operation level.
Resource level: It is the finest authorization granularity which defines whether a user has the permission to accessspecific resources. For example, granting an account read/write access to a specific CVM instance is an authorization
at the resource level. The Tencent Cloud product that supports resource-level API authorization supports resourcelevel authorization.

API authorization granularity
Resource-level API: It supports the authorization of a specific resource.
Operation-level API: It doesn't support the authorization of a specific resource.
For authentication through a resource-level API, the Tencent Cloud product will deliver the six-segment format of thespecific resource to CAM for authentication, thereby supporting authorization and authentication of the specificresource.
For authentication through an operation-level API, the Tencent Cloud product will not deliver the six-segment format of
the specific resource to CAM for authentication. Instead, it will deliver the * of any resource. To be more specific, if
a resource is specified in the policy syntax during authorization but not delivered through the API for authentication,
CAM will identify the API as out of the authorization scope, that is, having no permission.

©2013-2022 Tencent Cloud. All rights reserved.

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