HP 418800-B21 HP StorageWorks Replication Solutions Manager 4.0.1 user guide ( - Page 150

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 the format. Replica name format Example RR-YYYYMMDD.HHMMSS.SSS RR-20070414.012616.753 YYYY=year, MM=month, DD=day, 2007, 04, 14 HH=hours, MM=minutes, SS.SSS=seconds 01, 26, 16.753 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 disk 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. For example, say that you use the wizard to create and save a round robin job that maintains three replicas of a host volume. The first three times that you run a job instance, a new replica will be created and added to the wizard's replica repository; and, each replica will have its own underlying virtual disks. When you run the four times or more, the oldest replica will be deleted from the repository and a new replica added. However, no additional underlying virtual disks will required for the new replica. Snapclones (host volume) Snapclone replication of a host volume instantly creates independent point-in-time copies of the virtual disks that underlie a host volume. The copies are called snapclones. The snapclone property indicates whether the host volume can be locally replicated using the snapclone method. Values are: 150 Host volumes