HP StorageWorks XP Remote Web Console Software - Manual (Page 125)

4. Click OK.
For the external 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 XP Command View Advanced
Edition Software or Remote Web Console.
When errors occur during the status change for the external LU, the failed setting and error code
appears in the 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. Data that is not written by the host (for example,
data written by XP Business Copy) is asynchronously destaged to the external array regardless of the
Cache Mode setting.
Data that is not written by the host (for example, data written by XP Business Copy) is asynchronously
destaged to the external array regardless of the Cache Mode setting.
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 XP Cache LUN 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.
The procedures for changing the cache mode of the external volume are described as follows.
• Changing the cache mode of all external LUs in an external array
• Changing the cache mode of an individual external LU
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 array is as follows:
1. Log on to Remote Web Console.
2.
Click the XP External Storage icon ( ) on the Remote Web Console main pane. The
XP External Storage 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, see the HP StorageWorks XP Remote Web Console user
guide for XP12000/XP10000 Disk Arrays and SVS 200.
4. Click the LU Operation tab. The LU Operation pane is displayed.
5. Click External Devices in the Device tree. The connected external arrays are displayed in the
Device list.
XP External Storage Software User Guide 125