HP 418800-B21 HP StorageWorks Replication Solutions Manager 4.0.1 user guide ( - Page 98

1. A source virtual disk (1 of 3 in the source DR group) 2. A destination virtual disk (remote copy) 3. The source DR group log disk (1 of 3 in the destination DR group) Site 1 < remote link > Site 2 A DR group log is a designated virtual disk in a source DR group that is used under certain circumstances to temporarily store host writes to source virtual disks. Logging can be started automatically when remote replication to the destination DR group cannot be performed, for example when a remote link is down. Logging can also be started on demand by performing a suspend action from the GUI, jobs, or a CLUI command. When remote replication is re-established, the contents of the source DR group log are written to the destination virtual disks. See DR groups logs. Home group and home configuration When designated as a home group, the group is considered be the preferred source in the remote replication relationship. By default, the property for the source and destination DR group is set true and false, respectively. This is called the home configuration. See DR groups home. DR group names When a DR group pair is created, the same DR group name is assigned to the source and destination DR group. 98 DR Groups