HP StorageWorks SAN Virtualization Services Platform Manager user guide (5697-0295, January 2010)

• Add a virtual disk to a virtual disk group. Before doing this, the virtual disk must have the same
set of presentations as the virtual disk group or no presentations.
• Change the name of a virtual disk. This can only be done when a host is offline.
• The following are snapshot service operations:
• Create a PiT on a virtual disk owned by the host.
• Delete a snapshot of a PiT of a virtual disk owned by the host.
• Delete a PiT of a virtual disk owned by the host.
• Roll back a virtual disk or virtual disk group.
• Restore a snapshot.
• Remove permission from a snapshot or a virtual disk with PiT.
• Create a snapclone group.
• Create an asynchronous mirror group.
• Create a migration group.
For information about snapshots, see “Using snapshots” on page 197. For information about snapclones,
see “Using snapclones” on page 241. For information about migrations, see
“Using migration” on page 257. For information about mirroring, see “Using mirroring” on page 267.
To move a host into the offline state:
1. Right-click the host.
2. Select Manage On/Offline State > Set Host Offline. A confirmation screen appears.
3. Click Finish. The host is now offline.
To move a host from the offline to the online state:
1. Right-click the host.
2. Select Manage On/Offline State > Set Host Online. A confirmation screen appears.
3. Click Finish. The host is now online and presentations are restored to the host.
Deleting hosts
When a host is physically removed from the SAN, VSM detects the removal and changes the host’s
status to absent. VSM enables you to delete hosts if they are absent. You would normally do this if
you know that you do not intend to reconnect the host that was removed. When a host is deleted, the
permissions that the host had to access VSM storage elements are removed.
To delete a host:
1. Right-click the host.
2. Select Delete. A confirmation screen appears.
3. Click Finish. The host is deleted.
Working with hosts156