Data Protection for VMware and Application Data in Mission Critical Environments

HP StorageWorks Business Copy EVA (EVA BC)

Business copy EVA is a feature of the EVA that allows the creation of point-in-time copies of logical

units local to the array. These copies can be rapidly created and deployed for various business

critical reasons such as:

• Back up of data with very little to no impact on applications

• Running tests on applications against real data

• Quick restore of a logical units data in case of data loss

• Data mining for marketing or business improvement purposes

In order to meet different usage requirements, BC EVA comes in three flavors:

• Snapshots

• Snapclone

• Mirrorclones

HP StorageWorks Continuous Access EVA (CA EVA)

Continuous Access (CA) EVA is another feature that allows data replication between two or more

EVAs. Data replication can be done synchronously or asynchronously. CA EVA supports various

interconnection technologies such as FCIP and Fibre Channel. Additionally, the EVA also supports bi-

directional replication. Data replication between sites is most widely used when creating a true

disaster-tolerant data center.

A copy set is a replicated vdisk and a Data Replication (DR) group is a data replication group that is

comprised of replicated vdisks (Copy Sets). Each DR group acts as a consistency group and all copy

sets within that group share a single write history log. Thus, a DR group is the primary level of CA

management. All CA management actions such as Write Mode, Failsafe Mode, Suspend Mode, and

Failover are performed on a DR group and not on each copy set. Replication Solution Manager is the

preferred tool to manage BC and CA on EVA.

Figure 11: EVA Continuous Access