Hp StoreVirtual 4000 Storage User Manual download pdf (Page 31)

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 32) 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.

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Hp StoreVirtual 4000 Storage User Manual Page 31