HP P6000 Replication Solutions Manager User Guide (T3680-96089, October 2012)

Local replication wizard
The local replication wizard allows you to make point-in-time copies of a host volume, host volume
group, or host disk device. The wizard generates replication manager jobs and keeps track of
your replication actions in the replica repository. See Creating replicas and Replica repository.
You can restore a host volume from the replicas in the repository. See Restoring host volumes
(Instant Restore).
Replica repository
The replica repository feature supports use of the local replication wizard and the instant restore
wizard. Whenever the local replication wizard is used, replica information is saved in the repository.
Whenever the instant restore wizard is used, the wizard checks the repository to find relevant
replicas to restore from. At a low level, the replica repository contains a large amount of technical
information. Summary information is displayed in the Replica Repository tab and in the Replica
Repository Properties window.
Use of the replica repository
Generally, you do not need to directly perform actions on replicas. The replication manager
automatically uses the replica repository for many functions. When necessary, you can view, edit,
and delete replicas in the repository. You can also remove replicas from round robin rotation.
Replica names
The wizard assigns replica names based on the date and time when the replication is performed.
Names begin with RR (replica repository) and use this format.
ExampleReplica name format
RR-20070414.012616.753RR-YYYYMMDD.HHMMSS.SSS
2007, 04, 14YYYY=year, MM=month, DD=day,
01, 26, 16.753HH=hours, MM=minutes, SS.SSS=seconds
To determine if a replica was made in the AM or PM you can view its properties. See Viewing
host volume properties (replicas).
Replica types
The replicas in the repository are classified by type. Values for the replica type property are:
• Round robin. Indicates the replica is part of a round robin rotation (rolling backup).
• Instant Restore. Indicates the replica is not part of a round robin rotation (rolling backup).
Has-replica property
The has-replica property (in the Replica Repository Properties window) indicates if a replica is
logically complete. For example, if one or more virtual disks underlie a host volume replica and
one or more virtual disks are deleted, the replica will still appear in the repository, but when its
properties are viewed, the has-replica property will be set to no. This property is used in the Instant
Restore wizard to ensure that you cannot accidently restore from a logically incomplete replica.
Round robin replicas (wizard)
Round robin refers to repeatedly creating replicas of a host volume in a way that reuses the
underlying virtual disk resources. This reduces resource consumption and simplifies replica
management. A local replication wizard allows you to set up round robin replication. See Creating
round robin replicas.
Host volume concepts 135