Achieving Affordable Disaster Recovery; Configuration For Affordable Disaster Recovery; High Availability During Failover-Example Configuration - HP StorageWorks P4000 User Manual

NOTE:
Data protection levels are set independently for primary and remote volumes.
How it works
If one of the storage systems in the primary location fails, the primary volume will still be available.
If all of the storage systems fail, or if the application server fails, then failover to the backup application
server occurs, and the remote snapshot(s) becomes available.
Figure 13 High availability during failover-Example configuration
.

Achieving affordable disaster recovery

Even if you do not have clustered application servers or network bandwidth required for configuring
hot backup sites, you can still use Remote Copy to protect your data during an emergency.
Using remote snapshots, you can maintain copies of your volumes in remote sites. Set up a schedule
for creating remote snapshots, and if your primary storage site becomes unavailable, you can easily
access the most recent remote copy of your data volumes. You can also use remote snapshots to
transfer data to a backup location where tape backups are then created. This eliminates the backup
window on your primary volumes, and ensures that you have copies of your data in the remote site
on storage systems as well as on tape.

Configuration for affordable disaster recovery

To configure affordable disaster recovery, create remote snapshots of your volumes in an off-site
location. In addition, you can create tape backups from the remote snapshots in the off-site location:
Designate one or more off-site locations to be the destination for remote snapshots.
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