HP 418800-B21 HP StorageWorks Replication Solutions Manager 4.0.1 user guide ( - Page 110

Virtual disks • All virtual disks that contain the data for an application must be in the same DR group. • When in enhanced asynchronous write mode, virtual disks cannot be added to or deleted from a DR group. This restriction is controller software version dependent. See controller software features - remote replication. • When suspended, virtual disks cannot be removed from the source or destination DR group. • Virtual disks cannot be directly added to a destination DR group. • To be added to a source DR group, a virtual disk: • Cannot be a member of another DR group. • Cannot be a snapshot or a mirrorclone. See virtual disks types. • Cannot have a mirrorclone. This restriction is controller software version dependent. See controller software features - remote replication. • Must be in a normal operational state. See resources operational states. • Must use mirrored cache. See virtual disks cache policies. • Must have the same presentation status as other virtual disks in the DR group. With some versions of controller software, the virtual disk must be presented to a host. See storage systems controller software features - remote replication. See also virtual disks presentation. Suspend on failover Suspend on failover is an event that combines the failover of a DR group pair and suspension of remote replication. The DR group pair is failed over, followed immediately by suspension of remote replication. See DR groups suspension state and remote replication guidelines. This event can be initiated through the replication manager GUI, jobs, or the CLUI. See DR groups actions cross reference. IMPORTANT: Do not initiate this event when the remote replication links are down, especially during an unplanned failover. Doing so can create an invalid source-source configuration. See invalid DR group pair - source and source. IMPORTANT: Do not initiate this event if the failsafe mode of the DR group pair is enabled. This can create an invalid configuration. Controller software versions Implementation of this feature is controller software dependent. See controller software features - remote replication. Suspension state Suspension state Suspension state indicates if remote replication in a DR group pair is allowed or has been stopped. Values are: • Suspended. Remote replication in the DR group pair has been stopped. • Resumed. Remote replication in the DR group pair is allowed. 110 DR Groups