Disconnecting All External Lus In An External Array (Disconnect Subsystem); Disconnecting External Lus Individually (Disconnect Volume); Disconnect Subsystem And Check Paths & Restore Vol. Commands - HP StorageWorks XP12000 User Manual

• When executing the Disconnect Subsystem or Disconnect Volume command, the Ex-Dev. Status column
in the Device list changes to Cache Destage. Even if there is no data left in cache memory, the
displayed status remains as Cache Destage, until the Disconnect Subsystem or Disconnect Volume
command processing is complete.
• When the Disconnect Subsystem or Disconnect Volume command is executed and all data in cache
memory is written to the external LU, the Ex-Dev. Status column in the Device list changes to Disconnect.

Disconnecting all external LUs in an external array (Disconnect Subsystem)

1. In the LU Operation pane, select External Devices in the Device tree. Connected external arrays appear
in the Device list.
2. In the Device list, right-click the external array you want to disconnect from the local array, and select
Disconnect Subsystem.
Figure 57 Disconnect Subsystem and Check Paths & Restore Vol. Commands
The selected external array appears in blue italics in the LU list and Device list, and appears in the
Preset list. To check details of the intended operations, 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.
3. Click Apply. A confirmation message appears.
4. Click OK.
The Ex-Dev. Status column in the Device list changes to Cache Destaging. When External Storage XP
finishes writing data from cache to the external LU, the Ex-Dev. Status column changes to Disconnect.
If errors occur during disconnect operations, failed settings and error codes appear in the Preset list. To
check error messages, right-click the failed setting, and select Detail.
CAUTION: To access the external array after executing the Disconnect Subsystem command, you must
execute the Check Paths & Restore Vol. command.

Disconnecting external LUs individually (Disconnect Volume)

1. In the LU Operation pane, select an external LU group number in the Device tree. Information about
external LUs in the selected external LU group appears in the Device list.
96 Configuring external LUs