Patent ID: 8793373
Filing Date: 2014-07-29
Classification: H04L

Abstract:
1. A network system, comprising: a first control unit; and a data storage system providing a plurality of sub storage areas (LUs) having different storage characteristics to a host system; wherein the data storage system comprises a plurality of storage systems, and the storage system has a plurality of storage media mounted thereto, and a storage configuration information comprises a model information indicating a type of the storage system, and a media information indicating a type of the storage media being mounted; wherein the host system has a second control unit, and one or more virtual machines controlled by the second control unit is operated, having virtual machine resources allocated to each virtual machine; wherein the first control unit: acquires information on the virtual machine resources; determines the storage characteristics of the sub storage area to be allocated to the virtual machine based on the virtual machine resource information; constitutes a data storage area (volume) from the plurality of sub storage areas having the same storage characteristics; determines a model rank for each storage system based on the model information, and determines a media rank of each storage media based on the media information; and computes a storage characteristics (LU Tier rank) of the sub storage area formed from the plurality of storage media based on the model rank and the media rank; and stores the data of the virtual machine to the data storage area; wherein the data of the virtual machine is distributed and stored in the data storage area; wherein the host system further comprises a plurality of CPU units for executing processes, a memory unit having a determined storage capacity, a communication unit having multiple paths for connecting to the data storage system, and a storage unit for storing information; the virtual machine resource information is stored in the storage unit; wherein either the virtual machine resource information comprises one or more of the following information allocated to the virtual machine: (a1) number of virtual CPUs, (a2) frequency of operation of a virtual CPU, (a3) storage capacity of the virtual memory, (a4) number of virtual connection ports, and (a5) bandwidth of virtual communication path; or the virtual machine resource information comprises one or more of the following information allocated to the virtual machine: (b1) ratio of number of virtual CPUs being allocated to the total number of virtual CPUs, (b2) ratio of operation frequency being allocated to the overall operation frequency of the virtual CPUs, (b3) ratio of allocated storage capacity to a total storage capacity of the virtual memory, (b4) ratio of number of allocated ports to a total number of virtual connection ports, and (b5) ratio of allocated bandwidth to the bandwidth of the virtual communication path.