HP LeftHand P4000 Virtual SAN Appliance Software - Manual (Page 33)

3 Sample Remote Copy configurations
Because of its flexibility, Remote Copy is useful in a variety of configurations. The sample
configurations described in this chapter show only a few ways to use Remote Copy for business
continuance, backup and recovery, data migration, and data mining.
Using Remote Copy for business continuance
Business continuance is composed of disaster recovery and high availability of data. If using Remote
Copy for business continuance, data is stored off-site and is readily available in the event of a site
or system failure.
Achieving high availability
Creating remote snapshots in remote locations with Remote Copy ensures that applications such
as SQL Server, Oracle, and Exchange have access to backup copies of data volumes if production
application servers or data volumes fail.
Using off-site remote snapshots of your production volumes, you can configure a backup application
server to access those remote snapshots or volumes. Off-site remote snapshots, particularly when
supplemented with synchronous Network RAID within a cluster, ensure high availability of critical
data volumes.
Configuration for high availability
To use remote snapshots for high availability, configure a backup application server to access
remote volumes in the event of a primary system failure.
Figure 8 (page 34) illustrates this simple
high availability configuration.
•
Configure primary and backup application servers.
During normal operation, the production application server reads and writes to the primary
volume.
•
Set up a schedule for copying remote snapshots to the backup location. If your application
server uses multiple volumes that must be in sync, use a script or VSS to quiesce the application
before creating remote snapshots.
Using Remote Copy for business continuance 33