Advanced Copy EC

Equivalent Copy creates and maintains a copy volume (mirror) synchronized to the business data volume, until they are 'detached' (mirror suspend or break) to enable a backup operation to start.
As the detached copy volume contains the same data as the business volume - up to the time synchronization stopped, it can be used as a point-in-time copy for back up to a tape device while business operations continue on the original business volume.

Two methods of breaking the mirror are provided. If a complete break is made the copy volume is fully detached and any subsequent use of EC will copy all the operational data again to a new copy volume before maintaining the mirror in synchronization. If the Suspend/Resume functions are used (mirror suspend) the same copy can be resumed. In this case only the differences between the business and copy volume will be copied until synchronization is once again reached and then maintained.
Which method of re-establishing synchronization will depend on how long the copy volume has been detached. If the suspension time is relatively short, the suspend resume method will be quickest.

Applicable Operation

• Operations where there is need to avoid competition between heavy load operations such as storage copying and batch transactions.
• Performing a backup.
• Performing system test data replication.

Benefits

• Ensures significant reductions in time, by enabling backup data to be created and maintained in parallel with normal business operations.
• Enables copy data to be detached and used for other processes, data discovery, batch enquiries, system testing, at any point in time, without effect on operational processes.

Product Requirements

Note: Products/features/support content introduced on this page may be modified without notice.