HP StorageWorks External Storage XP user guide for the XP12000, XP10000, SVS200 (T1706-96009, October 2007)

Restoring volum
es in a mapped external LU individually
1. In LU Operation pane, select an external LU group number in the Device tree. Information about the
external LUs in the selected external LU group appear in the Device list.
2. In the Device l
ist, right-click the external LU you want to restore, and select LDEV Restore.
The selected external LU group number and external LU appear in blue italics in the Device tree and
Device list. The contents of the setting appears in the Preset list. To check setting details, right-click
the setting in the Preset list, and select Detail. To cancel the setting, right-click the setting in the
Preset list, a
nd select Delete.
3. Click Apply.Aconfirmation message appears.
4. Click OK.
For the exter
nal LUs of the selected external array, the Status column of the Device list changes
to the restored status, and the external LU can be used in the Command View XP or XP Remote
Web Console.
When errors o
ccur during the status change for the external LU, the failed setting and error code
appears in t
he Preset list. To check the error message, right-click the failed setting, and select Detail.
Changing the cache mode setting of the external LU
You can change the cache mode of the external LU in the LU Operation pane. To change the cache
mode of the external LU, right-click the array or the external LU, select the Change Cache Mode in the
pop-up menu, and then select Enable or Disable.
Check the following before changing the cache mode of the external volume.
• Whether the LU is part of a LUSE. When it constitutes a part of a LUSE, the cache mode setting
should be same among all LUs which constitute the LUSE LU.
Whether the bind mode of a Cache LUN is set. When bind mode is set, you cannot change the cache
mode from Enable to Disable. To change the cache mode to Disable, first cancel the setting for Cache
LUN XP or change the cache residency mode to the priority mode.
• Whether the IO Suppression mode is set to Disable. When the IO Suppression mode is set to
Enable, you cannot change the cache mode from Disable to Enable.
Whether the volume is not a remote command device. When the volume is a remote command
device, you cannot change the cache mode from Disable to Enable.
Changing the cache mode of all external LUs in an external
array
The procedure to change the cache mode of all external volumes in an external subsystem is as follows:
1. Log on t
o Remote Web Console.
2. Click the External Storage XP icon (
) on the Remote Web Console main pane. The
External Storage XP pane (LU Operation pane) is displayed.
3. Change the session to Modify mode by clicking the modify icon. For the procedure to change the
operation mode to Modify mode, please refer to the HP StorageWorks XP Remote Web Console
user g
uide.
4. Click the LU Operation tab.TheLUOperationpaneisdisplayed.
5. Click External Devices in the Device tree. The connected external arrays are displayed in the
Devi
ce list.
11 4
Configuring external LUs