HP XP P9500 Storage - Manual (Page 52)

8. Click Apply in the Confirm window.
The settings are applied to the local storage system and the displayed information for the
external volume status in the window becomes Cache Destage. When all the data in the cache
memory is written to the external volume, the displayed information for the external volume
status in the window becomes Disconnect. When an error occurs, an error message appears.
Verify the details in the Confirm window.
CAUTION: To access the external storage system after executing the Disconnect External Volumes
command, you need to execute the Reconnect External Volumes command.
You can also disconnect an individual external volume by using a spreadsheet (see the HP P9000
Spreadsheet Guide).
Checking connection status and resuming external volume operation
You can resume external volume operations by executing the Reconnect External Storage Systems
command or the Reconnect External Volumes command in the following cases:
•
The Reconnect External Storage Systems command or the Reconnect External Volumes command
is required to be executed to resume using the disconnected external volume using the
Disconnect External Storage Systems or the Disconnect External Volumes command.
•
When errors occur in all the external paths, the local storage system sets the status of external
volume to Blockade. In this case, execute the Reconnect External Storage Systems command
or the Reconnect External Volumes command.
If the status of the external volume cannot be restored even though the Reconnect External
Storage Systems command or the Reconnect External Volumes command is executed, restore
the path to the external storage system as described in
“General troubleshooting” (page 61) .
Then execute the Reconnect External Storage Systems command or the Reconnect External
Volumes command to make the external volume in the Blockade status usable.
•
When the Reconnect External Storage Systems command or the Reconnect External Volumes
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.
CAUTION: After executing the Reconnect External Storage Systems command or the Reconnect
External Volumes command, check the current progress status. To refresh the displayed information,
click Refresh View on the Remote Web Console main window.
NOTE: When the Reconnect External Storage Systems command or the Reconnect External
Volumes command is executed and the external volume is ready to be restored as the mapped
volume, the external volume is set to accept the I/Os and you can resume using the external volume
as a mapped volume. However, if the external volume is not ready to be resumed, the status of
the disconnected volume remains as Blockade.
Resuming all external volumes (reconnect external storage systems)
To resume all the external volumes in the external storage system at once:
1. Click External Storage in the Storage Systems tree.
The list of available external storage systems appear in the tree.
2. Select the External Storage Systems tab.
52 Performing External Storage operations