Migration Coordinator – In Place Migration Modes
Tags: nsx, migration, workload, vmware
Published: 2023-08-15 08:28:15

Author: Samuel Kommu, VMware

In the first part of this blog series, we took a high level view of all the modes that are available with Migration Coordinator, a fully GSS supported tool built into NSX that enables migrating from NSX from vSphere to NSX (NSX-T).

The second blog in this series, will take a closer look at the available options for in-place migrations, along with the pros and cons of each approach.

**NSX for vSphere: Fixed Topology**

This mode was the very first mode introduced with migration coordinator in the NSX 2.4 release. This mode supports migrating configuration and workloads to NSX, using the same hosts that are running NSX for vSphere. It only needs extra capacity to run the NSX appliances such as the Managers and Edges.

Locating the mode: Marked in red below.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/6h6dbx2zq6wt6y0h96m4.png)


NSX Prep:
Installation: NSX manager and Edges
Configuration: None

Pros:
Workload Migration: Built in
Bridging: Built in

Cons:
Customization options: None
Timing workload migration: No control
Supported topologies: Only 5

**Distributed Firewall, Host and Workload**

This mode is useful when the requirement is to migrate only Distributed Firewall configuration.

Locating the mode

This mode is under the “Advanced Migration Modes” marked in red below.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/g6btp2qfd8b95lb1s3g1.png)


NSX Prep:
Installation: NSX manager and Edges
Configuration:
Configure the N/S network connectivity and
South bound T0s all the way down to the Segments

Pros:
Workload Migration: Built in
Bridging: Built in
Customization options: North bound of segment can be customized as required

Cons:
Timing workload migration: No control
Supported topologies: Any

**NSX for vSphere: User Defined Topology – Complete migration**

User Defined Topology mode is built to merge the simplicity of “Fixed Topology” mode with flexibility of “Distributed Firewall, Host and Workload” mode. In this mode, users still have the flexibility to configure the N/S connectivity and create the T0s. Rest of the configuration, networking and security, can be migrated with the migration coordinator using the mode.

Locating the mode

This mode is under User Defined Topology mode.

Click on the User Defined Topology Mode highlighted in red below:


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/kjmtzy0e3xfi7y5j1w9s.png)


And then select the first option highlighted in red below:


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/31pt7vvj9dhs895zonv3.png)


NSX Prep:
Installation: NSX manager and Edges
Configuration:
Configure the N/S network connectivity and
Create T0s

Pros:
Workload Migration: Built in
Bridging: Built in
Customization options: N/S connectivity and T0 design
Supported topologies: Any

Cons:
Timing workload migration: No control

**NSX Global Manager: User Defined Topology – Complete migration
**
For customers with Cross VCenter Deployments, migration coordinator allows migrating their NSX for vSphere into Federation using the “User Defined Topology – Complete Migration” Mode for an in-place migration approach. This mode is only available via the Global Manager.

Locating the mode

On the Global Manager under System -> Migrate, select the NSX for vSphere mode, highlighted in red below:

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/80mqm39oqxdutne6nxhg.png)


Select the “Complete migration”, highlighted in red below:

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ec5980tbr5glittg9f57.png)


NSX Prep:
Installation: NSX global and local manager, Edges
Configuration:
Configure the N/S network connectivity and
Create T0s

Pros:
Workload Migration: Built in
Bridging: Built in
Customization options: N/S connectivity and T0 design
Supported topologies: Any

Cons:
Timing workload migration: No control

**Conclusion**

In the second part of this blog series, we took a closer look at the in-place migration options available using the Migration Coordaintor. In-place migration modes are designed for cases where preference is to use the existing hardware and letting Migration Coordaintor take care of all the details of the workload migration. Some of these modes also allow flexibility in defining the north / south connectivity.

In the third part of this series, we will take a look at the lift and shift migration modes.