Optimizing disaster recovery systems during takeover operations

• US 9,983,964 B2
• Filed: 05/20/2016
• Issued: 05/29/2018
• Est. Priority Date: 05/02/2011
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Akirav, Shay H., Caro, Aviv, Maoz, Itay, Paz, Gil E., Shmueli, Uri, Taub, Tzafrir Z.
• Primary Examiner(s): Maskulinski, Michael
• Application Number:
  US15/160,584
• Publication Number:
  US 20160266990A1
• Time in Patent Office: 739 Days
• CPC Class Codes: G06F 11/1451 by selection of backup contents
• CPC Class Codes: G06F 11/1456 Hardware arrangements for backup
• CPC Class Codes: G06F 11/1464 for networked environments
• CPC Class Codes: G06F 11/2033 switching over of hardware resources
• CPC Class Codes: G06F 11/2094 Redundant storage or storage space G06F11/2056 takes precedence
• CPC Class Codes: G06F 16/27 Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
• CPC Class Codes: G06F 2201/805 Real-time
• CPC Class Codes: G06F 2201/82 Solving problems relating to consistency ensuring consistency in mirrored systems G06F11/2064

Abstract

Exemplary embodiments for optimizing disaster recovery systems during takeover operations are provided. In one embodiment, by way of example only, a flag is set in a replication grid manager to identify replication grid members to consult in a reconciliation process for resolving intersecting and non-intersecting data amongst the disaster recovery systems for a takeover operation, including indicating those of the replication grid members that acquired ownership over cartridges belonging to source systems.

Claims

1. A system for optimizing disaster recovery systems during takeover operations in a computing storage environment, the system comprising:

at least one processor device, wherein the at least one processor device;

sets a flag in a replication grid manager to identify a plurality of replication grid members to consult in a reconciliation process for resolving intersecting and non-intersecting data amongst a plurality of data storage systems for a takeover operation, including indicating those of the plurality of replication grid members that acquired ownership over at least one of a plurality of cartridges belonging to one of a plurality of source systems; and

performs the consulting with the plurality of replication grid members for the takeover operation to accommodate a coordination of an ownership synchronization process for a plurality of cartridges not initially distributed to at least one of the plurality of replication grid members.

2. The system of claim 1, wherein the at least one processor device acquires ownership of at least one of the plurality of cartridges by the at least one of the plurality of replication grid members, wherein a production load of the at least one of the plurality of cartridges is transferred.

3. The system of claim 2, wherein the at least one processor device writes and persistently stores the flag in the replication grid manager, the writing and storing the flag occurring at the time of acquiring ownership of at least one of the plurality of cartridges by the at least one of the plurality of replication grid members.

4. The system of claim 1, wherein the consulting includes sending a request for a complete list of the plurality of cartridges owned by the plurality of replication grid members that acquired ownership of at least one of a plurality of cartridges belonging to one of a plurality of source systems.

5. The system of claim 1, wherein the consulting is performed prior to the takeover operation.

6. The system of claim 1, wherein the coordination of the ownership synchronization process includes preventing a change of ownership of the plurality of cartridges that are owned by those of the plurality of replication grid members online.

7. A computer program product for optimizing disaster recovery systems during takeover operations, by a processor device in a computing storage environment, the computer program product embodied on a non-transitory computer-readable storage medium having computer-readable program code portions stored therein, the computer-readable program code portions comprising:

an executable portion that sets a flag in a replication grid manager to identify a plurality of replication grid members to consult in a reconciliation process for resolving intersecting and non-intersecting data amongst a plurality of data storage systems for a takeover operation, including indicating those of the plurality of replication grid members that acquired ownership over at least one of a plurality of cartridges belonging to one of a plurality of source systems; and

an executable portion that performs the consulting with the plurality of replication grid members for the takeover operation to accommodate a coordination of an ownership synchronization process for a plurality of cartridges not initially distributed to at least one of the plurality of replication grid members.

8. The computer program product of claim 7, further including an executable portion that acquires ownership of at least one of the plurality of cartridges by the at least one of the plurality of replication grid members, wherein a production load of the at least one of the plurality of cartridges is transferred.

9. The computer program product of claim 8, further including an executable portion that writes and persistently stores the flag in the replication grid manager, the writing and storing the flag occurring at the time of acquiring ownership of at least one of the plurality of cartridges by the at least one of the plurality of replication grid members.

10. The computer program product of claim 7, wherein the consulting includes sending a request for a complete list of the plurality of cartridges owned by the plurality of replication grid members that acquired ownership of at least one of a plurality of cartridges belonging to one of a plurality of source systems.

11. The computer program product of claim 7, wherein the consulting is performed prior to the takeover operation.

12. The computer program product of claim 7, wherein the coordination of the ownership synchronization process includes preventing a change of ownership of the plurality of cartridges that are owned by those of the plurality of replication grid members online.