Disaster recovery

Disaster Recovery (DR) planning typically involves policies, processes, and planning at the enterprise level, which is well outside the scope of this deployment guide.

Disaster Recovery, at its most basic, is all about data protection. The most common strategies for data protection include the following:

• Backups made to tape and sent off-site at regular intervals, typically daily.

• For the hardware and network failure scenarios, the virtual images restart following failover.

• For the hardware and network failure scenarios, the virtual images restart following failover.

• Backups made to disk on-site, automatically copied to an off-site disk, or made directly to an off-site disk.

• Replication of data to an off-site location, making use of storage area network (SAN) technology. This strategy eliminates the need to restore the data. Only the systems need to be restored or synced.

• High availability systems which replicate both data and system off-site. This strategy enables continuous access to systems and data.