Zero downtime backup and HP StorageWorks Continuous Access EVA

Data Protector A.05.10 - ZDB for EVA in the CA Configuration

Number of replica storages

rotated

Specify the number of replica storage versions you want to

keep on a disk array. During every backup session, Data

Protector creates a new replica storage version and leaves it

on the local disk array (in case of the source virtual disks

backup) or on the remote disk array (in case of the

destination virtual disks backup) as long as the specified

number is not reached. When the specified number is

reached, Data Protector deletes the oldest replica storage

version on the local disk array (in case of the source virtual

disks backup) or on the remote disk array (in case of the

destination virtual disks backup) and creates a new one.

Note that this option sets the number of replica storage

versions in the replica storage pool that belongs to the

backup specification you are configuring.

The replica storage pool will be created (or reused, if it

already exists) on the disk array with the virtual disks that

are selected for backup. If a failover occurs before the

corresponding ZDB session is started, the replica storage

pool will be created (or reused, if it already exists) on the

other disk array. Thus, this option limits the number of

replica storage versions on each disk array.

You need to specify this number if the Keep the replica

storage after the backup option is selected.

By default, this number is set to 1.

Note that the maximum number for vsnaps and standard

snapshots is 7. Data Protector does not limit the number of

replica storage versions rotated, but the session will fail if

the limit is exceeded.