MANAGEMENT SYSTEM OF INFORMATION MEMORY SYSTEM AND MANAGEMENT METHOD THEREOF

• US 20130198476A1
• Filed: 01/26/2012
• Published: 08/01/2013
• Est. Priority Date: 01/26/2012
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Nakajima, Jun, Shibayama, Tsukasa, Sakashita, Yukinori
• Application Number:
  US13/574,942
• Publication Number:
  US 20130198476A1
• Time in Patent Office: Days
• US Class Current: 711/165
• CPC Class Codes: G06F 3/0607 by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
• CPC Class Codes: G06F 3/0617 in relation to availability
• CPC Class Codes: G06F 3/0647 Migration mechanisms
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]

Abstract

Management method refers to position management information indicating an installation position of each of storage apparatuses. Positions of a first storage apparatus including a first volume and a second storage apparatus including a second volume composing a copy pair with the first volume are specified from the position management information. A positional relationship between the first and the second storage apparatuses before data migration is determined. If the second volume is not to be migrated, a condition of a positional relationship after the data migration to be satisfied between a migration destination storage apparatus of data of the first volume and the second storage apparatus is determined. Storage apparatus which satisfies at least the condition of the positional relationship after the data migration is selected from the storage apparatuses as the destination storage apparatus.

Claims

1. A management system managing an information storage system including a plurality of storage apparatuses, the management system comprising:

a memory apparatus; and

a processor,

wherein the memory apparatus stores position management information indicating an installation position of each of the plurality of storage apparatuses,

wherein the processor specifies a position of a first storage apparatus including a first volume and a position of a second storage apparatus including a second volume composing a copy pair with the first volume from the position management information,

wherein the processor determines a positional relationship between the first storage apparatus and the second storage apparatus before data migration from the specified position of the first storage apparatus and the specified position of the second storage apparatus,

wherein, in a case where the second volume is not to be migrated, the processor determines a condition of a positional relationship after the data migration to be satisfied between a migration destination storage apparatus of data of the first volume and the second storage apparatus based on the positional relationship before the data migration, and

wherein the processor selects a storage apparatus which satisfies at least the condition of positional relationship after the data migration from the plurality of storage apparatuses as a candidate of the migration destination storage apparatus.

2. A management system according to claim 1,

wherein the position management information indicates that the first storage apparatus and the second storage apparatus are installed at different positions, and

wherein the condition of positional relationship after the data migration indicates that the migration destination storage apparatus is installed at a position different from the position of the second storage apparatus.

3. A management system according to claim 2,

wherein the position management information includes identification information of a facility in which each of the plurality of storage apparatuses is present as information indicating the installation position of each of the plurality of storage apparatuses,

wherein the position management information indicates that the first storage apparatus and the second storage apparatus are installed at different facilities, and

wherein the condition of positional relationship after the data migration indicates that the migration destination storage apparatus is present in a facility different from the facility of the second storage apparatus.

4. A management system according to claim 1,

wherein the processor determines a second condition of positional relationship after the data migration to be satisfied between the migration destination storage apparatus of the data of the first volume and a third storage apparatus based on the positional relationship before the data migration in a case where the second volume is to be migrated to the third storage apparatus, and

wherein the processor selects a storage apparatus which satisfies at least the second condition of positional relationship after the data migration from the plurality of storage apparatuses as a candidate of the migration destination storage.

5. A management system according to claim 1,

wherein the position management information includes a network address of each of the plurality of storage apparatuses, and

wherein the processor determines the positional relationship before the data migration from a network address of the first storage apparatus and a network address of the second storage apparatus.

6. A management system according to claim 1,

wherein the first volume and the second volume are a copy pair of synchronous remote copy, and

wherein the condition of positional relationship after the data migration indicates that a distance between the second storage apparatus and the migration destination storage apparatus is shorter than a threshold value.

7. A management system according to claim 1,

wherein the processor determines line performance to be satisfied between the second storage apparatus and the migration destination storage apparatus based on data transfer performance between the first volume and the second volume, and

wherein the candidate of the migration destination storage apparatus selected by the processor satisfies the determined line performance between the second storage apparatus and the migration destination storage apparatus.

8. A management system according to claim 1,

wherein the management system includes an output device and an input device,

wherein the output device outputs a plurality of migration destination storage apparatus candidates, and

wherein the processor determines the migration destination storage apparatus candidate selected by the input device as the migration destination storage apparatus of the data of the first volume.

9. A management system according to claim 1,

wherein the memory apparatus stores performance independence relationship management information which specifies a volume designated to satisfy a performance independence relationship with respect to the first volume, and

wherein the processor refers to the performance independence relationship management information to select the candidate of the migration destination storage apparatus from storage apparatuses capable of providing a volume satisfying the performance independence relationship with respect to the volume designated to satisfy the performance independence relationship with the first volume.

10. A management system according to claim 1,

wherein the processor selects a plurality of candidates of migration destination storage apparatuses from the plurality of storage apparatuses, and

wherein the processor determines priority of each of the plurality of candidates in accordance with a remaining capacity of each of the plurality of candidates.

11. A management system according to claim 1,

wherein the memory apparatus stores cloud management information identifying a cloud type of each of the plurality of storage apparatus, and

wherein the processor refers to the cloud management information to select the candidate of the migration destination storage apparatus from storage apparatuses of a cloud type selected through an input device.

12. A management method for a management system of managing an information storage system including a plurality of storage apparatuses, the management method comprising:

referring, by the management system, to position management information indicating an installation position of each of the plurality of the storage apparatuses;

specifying, by the management system, a position of a first storage apparatus including a first volume and a position of a second storage apparatus including a second volume composing a copy pair with the first volume from the position management information;

determining, by the management system, a positional relationship before between the first storage apparatus and the second storage apparatus data migration from the specified position of the first storage apparatus and the specified position of the second storage apparatus,

determining, by the management system, a condition of a positional relationship after the data migration to be satisfied between a migration destination storage apparatus of data of the first volume and the second storage apparatus based on the positional relationship before the data migration in a case where the second volume is not to be migrated; and

selecting, by the management system, a storage apparatus which satisfies at least the condition of the positional relationship after the data migration from the plurality of storage apparatuses as a candidate of the migration destination storage apparatus.

13. A management method according to claim 12,

wherein the position management information indicates that the first storage apparatus and the second storage apparatus are installed at different positions, and

wherein the condition of the positional relationship after the data migration indicates that the migration destination storage apparatus is installed at a position different from the position of the second storage apparatus.

14. A management system managing an information storage system including a plurality of storage apparatuses, comprising:

a memory apparatus; and

a processor,

wherein the memory apparatus stores position management information indicating an installation position of each of the plurality of storage apparatuses,

wherein the processor specifies a position of a first storage apparatus including a first volume and a position of a second storage apparatus including a second volume composing a copy pair with the first volume from the position management information,

wherein the processor determines a positional relationship between the first storage apparatus and the second storage apparatus before data migration from the specified position of the first storage apparatus and the specified position of the second storage apparatus,

wherein, in a case where the second volume is to be migrated to a third storage apparatus, the processor determines a condition of a positional relationship after the data migration to be satisfied between a migration destination storage apparatus of data of the first volume and the third storage apparatus based on the positional relationship before the data migration, and

wherein the processor selects a storage apparatus which satisfies at least the condition of positional relationship after the data migration from the plurality of storage apparatuses as a candidate of the migration destination storage apparatus.