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3. Click the product name in the Volume Operation tree.
4. Right-click the external volume that you want to change in the Volume
Operation list.
5. Click Disconnect Volume in the pop-up menu.
The settings are displayed in blue and italics.
6. Verify the settings in the Preview dialog box.
7. Click Apply in the Volume Operation window.
The settings are applied to the local storage system and the Volume
Operation window is displayed normally. When an error occurs, an error
message is displayed. Verify the details in the Preview dialog box.
Caution: If you want to access the external storage system after you have
executed the Disconnect Volume command, you need to execute the
Check Paths & Restore Volume command.
Checking Connection Status and Resuming External
Volume Operation
You can resume external volume operation by executing the Check Paths &
Restore Volume command in the following cases:
•
The Check Paths & Restore Volume command is required to be
executed to resume using the disconnected external volume using the
Disconnect Subsystem command or the Disconnect Volume command.
•
When the errors occur in all the cross-subsystem paths, the local storage
system makes the status of external volume to Blockade. In this case,
execute the Check Paths & Restore Volume command.
If the status of the external volume cannot be restored even though the
Check Paths & Restore Volume command is executed, restore the path
to the external storage system as described in Troubleshooting. Then
execute the Check Paths & Restore Volume command to make the
external volume in the Blockade status usable.
•
When the Check Paths & Restore Volume command is executed for the
disconnected external volume for which the mapping settings are
preserved, the defined mapping setting and the current status of the
external volume are compared and checked if the settings match the actual
status. The path status and all other mapping configuration definitions are
checked. If the external volume can be resumed as a mapped volume as a
result of the checking processing, the volume status is set to be available
for the I/O operation.
Hitachi Universal Storage Platform V/VM Universal Volume Manager User's Guide
Performing Universal Volume Manager Operations
5-37
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