HP StorageWorks XP Remote Web Console Software - Manual (Page 109)

a mapped volume with the former settings. For instructions, see Checking the connection status
and resuming external LU operations (Check Paths & Restore Vol.) .
CAUTION: Note the following for the Disconnect Subsystem and Disconnect Volume commands:
•
After executing the Disconnect Subsystem or Disconnect Volume command, click the Refresh
button ( ) on the XP Command View Advanced Edition Software or Remote Web Console
main pane to update the information, and check the current progress status.
•
If you execute the Disconnect Subsystem or Disconnect Volume command when I/Os from an
open-system host are in progress, host I/Os to the specified volume are forcibly stopped.
When executing the Disconnect Subsystem or Disconnect Volume command, stop host I/Os,
and unmount the volume from the host.
•
If the volume is online from the mainframe host, you cannot execute the Disconnect Subsystem
or Disconnect Volume command. Stop host I/Os to the volume, and perform the Vary Offline
operation.
•
You cannot execute the Disconnect Subsystem or Disconnect Volume command for external
LUs that include LDEVs that are set as the copy pair for XP Flex Copy, XP Business Copy,
Hitachi ShadowImage for z/OS, XP Continuous Access Journal, Hitachi Universal Replicator
for z/OS, XP Continuous Access, Hitachi TrueCopy for z/OS, or XP Snapshot. However,
these commands can be executed in one of the following cases:
◦ When the XP Business Copy pair status is PSUE
◦ When the ShadowImage for z/OS™ pair status is Suspend.
◦ When the external volume is set as a pool volume (pool-VOL) and the status of that XP
Snapshot pair is PAIR
•
You cannot execute the Disconnect Subsystem ore Disconnect Volume command for external
LUs that include LDEVs for which XP Auto LUN's migration processing is in progress.
•
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.
The procedures of disconnecting the external volume are described as follows.
•
Disconnecting all external LUs in an external array (Disconnect Subsystem)
•
Disconnecting external LUs individually (Disconnect Volume)
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.
Disconnecting external arrays or LUs 109