Data migration management apparatus and information processing system

• US 8,555,106 B2
• Filed: 09/13/2012
• Issued: 10/08/2013
• Est. Priority Date: 05/13/2009
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Sakaguchi, Akihiko, Yamakawa, Hiroshi
• Primary Examiner(s): Wilson, Yolanda L
• Application Number:
  US13/613,929
• Publication Number:
  US 20130007387A1
• Time in Patent Office: 390 Days
• Field of Search: None
• US Class Current: 714/2
• CPC Class Codes: G06F 11/0715 in a system implementing multitasking multitasking per se G06F9/46
• CPC Class Codes: G06F 11/0727 in a storage system, e.g. in a DASD or network based storage system drivers for digital recording or reproducing units G06F3/06; circuits for error detection or correction within digital recording or reproducing units G11B20/18; for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS], H04L67/1097
• CPC Class Codes: G06F 11/0775 Content or structure details of the error report, e.g. specific table structure, specific error fields
• CPC Class Codes: G06F 11/1464 for networked environments
• CPC Class Codes: G06F 11/1497 Details of time redundant execution on a single processing unit
• 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

The present invention provides a data migration management apparatus that can easily create a re-execution task for re-executing an error-terminated data migration task, and also can increase the possibility of the re-execution task being successful. In a case where a data migration from a migration-source volume to a migration-destination volume fails, the management apparatus uses the information of the failed task to create a re-execution task. The management apparatus changes the configuration of a volume pair as necessary. The management apparatus manages the failed task in association with the re-execution task.

Claims

1. An apparatus for performing data migration of an information processing device having a plurality of storage areas, comprising:

a memory configured to store a migration plan including a storage area of a migration source and a storage area of a migration destination as a task in a task management table; and

a microprocessor configured to execute the migration plan,

wherein the microprocessor is configured to;

obtain information related to a storage area of a migration source and a storage area of a migration destination;

obtain a copy speed from migration history information when there is migration history information which shows migration history from a same or similar storage area with the storage area of the migration source to the same or similar storage area with the storage area of the migration destination, and calculate a data migration time required for data migration by dividing a size of data which is migrated from the storage area of the migration source to the storage area of the migration destination at the copy speed; and

indicate the calculated data migration time associated with an identifier of the task.

2. The apparatus according to claim 1, further comprising:

calculate a data migration time by dividing the size of data which is migrated from the storage area of the migration source to the storage area of the migration destination at a predetermined copy speed when there is no migration history information.

3. The apparatus according to claim 2, wherein the microprocessor is configured to obtain information as to a storage area of the migration source and a storage area of the migration destination with respect to a migration task for which task execution has failed.

4. The apparatus according to claim 3, wherein the microprocessor is further configured to:

recalculate a data migration time when the migration task for which task execution has failed;

perform a data volume pair configuration change when the recalculated data migration time is at least α

times greater than a previously calculated data migration time, wherein α

is a real number.

5. The apparatus according to claim 3, wherein the microprocessor is further configured to:

recalculate a data migration time when the migration task for which task execution has failed;

perform a data volume pair configuration change when an error termination time of a most recently performed data migration is at least β

times greater than the recalculated data migration time, wherein β

is a real number.

6. The apparatus according to claim 2, wherein the microprocessor is further configured to:

perform a data volume pair configuration change when a data migration completion time of a data volume for which data migration has been performed is at least γ

times greater than a data migration completion time of another data volume for which data migration has been performed, wherein γ

is a real number.

7. A method of performing data migration of an information processing device having a plurality of storage areas, comprising:

storing, in a memory, a migration plan including a storage area of a migration source and a storage area of a migration destination as a task in a task management table; and

executing, by a microprocessor, the migration plan,

wherein the executing comprises;

obtaining information related to a storage area of a migration source and a storage area of a migration destination;

obtaining a copy speed from migration history information when there is migration history information which shows migration history from a same or similar storage area with the storage area of the migration source to the same or similar storage area with the storage area of the migration destination, and calculating a data migration time required for data migration by dividing a size of data which is migrated from the storage area of the migration source to the storage area of the migration destination at the copy speed; and

indicating the calculated data migration time associated with an identifier of the task.

8. The method according to claim 7, wherein the executing further comprises:

calculating a data migration time by dividing the size of data which is migrated from the storage area of the migration source to the storage area of the migration destination at a predetermined copy speed when there is no migration history information.

9. The method according to claim 8, wherein the executing further comprises:

obtaining information as to a storage area of the migration source and a storage area of the migration destination with respect to a migration task for which task execution has failed.

10. The method according to claim 8, wherein the executing further comprises:

recalculating a data migration time when the migration task for which task execution has failed;

performing a data volume pair configuration change when the recalculated data migration time is at least α

times greater than a previously calculated data migration time, wherein α

is a real number.

11. The method according to claim 8, wherein the executing further comprises:

recalculating a data migration time when the migration task for which task execution has failed;

performing a data volume pair configuration change when an error termination time of a most recently performed data migration is at least β

times greater than the recalculated data migration time, wherein β

is a real number.

12. The method according to claim 7, wherein the executing further comprises:

performing a data volume pair configuration change when a data migration completion time of a data volume for which data migration has been performed is at least γ

times greater than a data migration completion time of another data volume for which data migration has been performed, wherein γ

is a real number.

13. A non-transitory computer readable medium storing computer program product, which, when executed by a computer, performs data migration of an information processing device having a plurality of storage areas, the data migration comprising:

storing a migration plan including a storage area of a migration source and a storage area of a migration destination as a task in a task management table; and

obtaining information related to a storage area of a migration source and a storage area of a migration destination;

obtaining a copy speed from migration history information when there is migration history information which shows migration history from a same or similar storage area with the storage area of the migration source to the same or similar storage area with the storage area of the migration destination, and calculating a data migration time required for data migration by dividing a size of data which is migrated from the storage area of the migration source to the storage area of the migration destination at the copy speed; and

indicating the calculated data migration time associated with an identifier of the task.

14. The non-transitory computer readable medium according to claim 13, wherein the data migration further comprises:

calculating a data migration time by dividing the size of data which is migrated from the storage area of the migration source to the storage area of the migration destination at a predetermined copy speed when there is no migration history information.

15. The non-transitory computer readable medium according to claim 14, wherein the data migration further comprises:

obtaining information as to a storage area of the migration source and a storage area of the migration destination with respect to a migration task for which task execution has failed.

16. The non-transitory computer readable medium according to claim 14, wherein the data migration further comprises:

recalculating a data migration time when the migration task for which task execution has failed;

performing a data volume pair configuration change when the recalculated data migration time is at least α

times greater than a previously calculated data migration time, wherein α

is a real number.

17. The non-transitory computer readable medium according to claim 14, wherein the data migration further comprises:

recalculating a data migration time when the migration task for which task execution has failed;

performing a data volume pair configuration change when an error termination time of a most recently performed data migration is at least β

times greater than the recalculated data migration time, wherein β

is a real number.

18. The non-transitory computer readable medium according to claim 13, wherein the data migration further comprises:

performing a data volume pair configuration change when a data migration completion time of a data volume for which data migration has been performed is at least γ

times greater than a data migration completion time of another data volume for which data migration has been performed, wherein γ

is a real number.