172IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
6.1.3 Copy Services
The SAN Volume Controller provides two Copy Services that enable you to copy virtual disks
(VDisks): FlashCopy and Remote Copy. These Copy Services are available for all supported
hosts that are connected to the SAN Volume Controller.
FlashCopy makes an instant, point-in-time copy from a source VDisk to a target VDisk.
You can use FlashCopy to:
–Backup data that changes frequently to tertiary storage.
–Test a new application on real business data before move into production.
–Create restart points for long-running batch jobs which is preferable to rer ...
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