HP XP External Storage Software - Manual (Page 132)

Deleting external LU mappings (Delete LU)
You can start deleting external LU mappings from the LU Operation pane. To delete the external LU
mapping, select Delete LU from the shortcut menu displayed in the LU Operation pane. Although you
can use the Delete LU command to delete the mapping between an internal LDEV and external LU,
you cannot use this command to reliably delete data in the external LU or internal LDEV.
Before deleting the external LU mapping, notice if any of the following are true:
• Whether or not the execution of any application (for example, RAID Manager XP) that is using
the command device is in progress.
If any application using an external LU command device is executing, stop the application.
• Whether the Disconnect Subsystem or Disconnect Volumes command was executed.
All data in cache memory must be written into the mapped external LU using the Disconnect
Subsystem or Disconnect Volume command. For more information about the Disconnect Subsystem
and Disconnect Volume commands, see
Disconnecting external arrays or LUs .
• The volume is part of a LUSE volume.
• A path is set.
• The volume is configured as part of a Continuous Access XP, Continuous Access XP Journal,
Business Copy XP, or Snapshot XP pair.
• The volume is set as a reserved LU for Business Copy XP or Auto LUN XP.
• The volume is set as a pool-VOL.
If any of these conditions are true, you cannot delete the external LU mapping.
1. In the LU Operation pane, select the external LU group number in the Device tree. Information
about the external LU mapped as an internal LDEV appears in the Device list.
2. In the Device list, right-click the external LU for which you want to delete the mapping, and select
Delete LU.
Settings appear in blue italics in the Device list, and they appear in the Preset list. To check details
regarding intended changes, right-click the setting in the Preset list, and select Detail. To cancel
settings, right-click the setting in the Preset list, and select Delete.
NOTE:
The maximum number of external LUs you can set at one time is 256.
3. Click Apply. A confirmation message appears.
If you already stopped the application, go to step 4. If you have not stopped the application,
click Cancel, stop the application, and retry the operation.
4. Click OK. A confirmation message appears.
5. Click Yes or No.
If you click Yes, a confirmation message appears.
If you click No, a warning message appears. To execute the Delete LU operation without writing
data in the local array cache memory to the external LU, click OK. To cancel the operation, click
Cancel. If you click OK, a confirmation message appears.
Configuring external LUs 132