HP 418800-B21 HP StorageWorks Replication Solutions Manager 4.0.1 user guide ( - Page 382

Set type DR groups Enabled hosts Host volumes Storage systems Virtual disks (and containers) Guidelines See managed sets of DR groups. See managed sets of virtual disks (and containers) Membership • A specific resource can be a member of more than one managed set. • The order in which members are added to, or appear in, a managed set does not affect the order in which actions are performed on the set's members. • Performing actions on a large managed set (a set with many members) can take a long time. For flexibility, consider using several small managed sets rather than a single large set. Managed sets of DR groups Managed sets of DR groups require careful planning. Consider the following guidelines. • Some DR group actions are permitted only on source DR groups; other actions are only permitted only on destination DR groups. See using DR group actions. • HP recommends that you create separate managed sets for source and destination DR groups. When you conduct failover operations, you can perform the actions that correspond to the new roles of the managed set. • Source and destination DR groups (from different DR group pairs) can be members of the same managed set. • The source and destination DR group in a DR group pair cannot be members of the same managed set. • If you plan to use DR group managed sets for failover operations, ensure the managed sets are controlled by the same management server at the time of failover. Managed sets of virtual disks (or containers) A managed set of the type virtual disks can contain two types of resources, either virtual disks or virtual disk containers. The distinction between disks and containers is important when using managed sets. See virtual disks overview. Managed sets of virtual disks (and containers) require careful planning. Consider the following guidelines. General guidelines • In general, do not include virtual disks and containers in the same managed set. Doing so can result in errors when certain actions are applied to the set. For example, applying a replication action to a managed set that includes containers will result in errors because containers cannot be replicated. • A managed set of virtual disks can include disks (or containers) from more than one storage system. • Ensure that you are aware of the current content of managed sets. When some GUI actions, job commands, or CLUI commands are applied to a managed set, the members are converted from virtual disks (storage volumes) to containers or from containers to a virtual disks. 382 Managed sets