The SAN Volume Controller provides
Copy Services features that enable you
to copy virtual disks (VDisks).
The following Copy Services
features 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.
- Metro
Mirror
- Provides a consistent copy of a source VDisk on a target
VDisk. Data is
written to the target VDisk synchronously after it is written to the
source
VDisk, so that the copy is continuously updated.
- Global Mirror
- Provides a consistent copy of a source
VDisk on a target VDisk. Data is
written to the target VDisk asynchronously, so that the copy is continuously
updated, but the copy might not contain the last few updates in the
event
that a disaster recovery operation is performed.