HP StorageWorks SAN Virtualization Services Platform Manager User Guide (5697-0454, May 2010)

6. Change the assigned OUID value.
7. Click Next. A confirmation screen appears.
8. Click Finish. The virtual disks’s OUID is changed.
Managing active and primary DPMs for a VDG
All members of a VDG that are permitted to access hosts that are connected to the SAN through DPMs
must be active on the same DPM.
When you add a virtual disk or snapshot to a VDG that is currently active on a different DPM to the
rest of the VDG members, the virtual disk or snapshot is added to the VDG successfully and failed
over to the active DPM of the other VDG members. The primary and secondary DPM settings of the
new member also change to be the same as the other VDG members.
You can:
• Change the primary and secondary DPMs for the VDG
• Change the active DPM for the VDG
Changing the primary and secondary DPM for a VDG
To change the primary and secondary DPM for a VDG:
1. Right-click the VDG.
2. Select Manage > Manage Data Path Module > Change Primary/Secondary Data Path
Module/VSM. The Change Primary/Secondary Data Path Module/VSM wizard opens to the Set
preferred path screen.
3. Use the checkboxes to set one DPM in the DPM group as primary and one DPM as secondary.
NOTE:
• Use care in selecting the primary and secondary DPMs to prevent over subscribing one
and under utilizing the other.
• If you click Finish without defining the primary and secondary DPMs, VSM defines these
roles automatically.
4. Click Next. A confirmation screen appears.
5. Click Finish. The primary and secondary Data Path Module settings are changed.
Changing the active DPM for a VDG
NOTE:
Use care in selecting the primary and secondary DPMs to prevent over subscribing one and under
utilizing the other.
To change the active DPM for a VDG:
1. Right-click the VDG.
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