10.5 HP StoreVirtual Storage Remote Copy User Guide (AX696-96247, March 2013)

Table 1 Uses for Remote Copy
How it worksUse Remote Copy for
Remote Copy stores remote snapshots on a machine in a
geographically separate location. The remote snapshots
Business continuance and disaster recovery
remain available in the event of a site or system failure at
the primary site.
Remote Copy eliminates the backup window on an
application server by creating remote snapshots on a
Off-site backup and recovery
backup server, either local or remote, and back up from
that server.
Remote Copy makes a complete copy of one or more
volumes without interrupting access to the original volumes.
Split mirror, data migration, content distribution
You can move the copy of the volume to the location where
it is needed.
Remote Copy creates copies of the original volume for use
by other application servers.
Volume clone
Benefits of Remote Copy
• Remote Copy maintains the primary volume’s availability to application servers. Snapshots
on the primary volume are taken instantaneously, and are then copied to remote snapshots
in the off-site location.
• Remote Copy operates at the block level, moving large amounts of data much more quickly
than file system copying.
• Snapshots are incremental, that is, snapshots save only those changes in the volume since the
last snapshot was created. Therefore, failback may need to resynchronize only the latest
changes rather than the entire volume.
• Remote Copy is robust. If the network link goes offline during the process, copying resumes
where it left off when the link is restored.
Planning for Remote Copy
Remote Copy works at the management group, cluster, volume, and snapshot levels. Review Table 2
(page 9) for common configurations at these levels.
8 Understanding and planning Remote Copy