HP 418800-B21 - StorageWorks Modular Smart Array 70 Storage Enclosure, User Manual

Page: 97 / 462

Viewing DR groups
Display DR group list and tree views. See DR groups views .
Considerations
• You can use the GUI or CLUI to display lists. See DR groups actions cross reference .
• Tree views are available only in the GUI.
Procedure
This procedure uses the GUI.
1. In the navigation pane, select DR Groups . The content pane displays DR groups.
2. Click the List tab. A tabular list of DR groups is displayed.
3. Click the Tree tab. A graphical tree of DR groups is displayed. Click View to select another
tree view.
Viewing DR group properties
View the properties of a speci fi c DR group. See DR groups properties summary .
Considerations
• You can use the GUI or CLUI. See DR groups actions cross reference .
Procedure
This procedure uses the GUI.
1. In the navigation pane, select DR Groups .
2. On the List tab, select the DR group to view.
3. Select Actions > View Properties . The DR Group Properties window opens.
4. Click the properties tabs.
DR group concepts
DR group pairs (source and destination)
DR groups operate in a paired relationship, with one DR group being a source and the other a
destination . The terms source and destination are sometimes referred to as a DR mode or DR role.
The terms source and destination are also applied to virtual disks, with a destination virtual disk also
being known as a remote copy . Various actions, such as a planned or unplanned failover, allow you to
reverse the relationship so that the source DR group becomes the destination and destination becomes
the source. See DR groups failover .
IMPORTANT:
The role of a DR group in remote replication is of critical importance and can be reversed at any time.
For example, a DR group can be a source at 8:00 and then, after a user-initiated failover, be a destination at
8:05. When reviewing a DR group’s role, ensure that you are looking at current properties.
In a typical environment, hosts perform I/O with the virtual disks in the source DR group at one site and
the data is remotely replicated to the destination DR group at another site. The virtual disks in a source
DR group remotely replicate to the same destination, fail over together, share a DR group log, and
preserve write-order within the group.
HP StorageWorks Replication Solutions Manager 4.0.1
97