HP StorageWorks XP12000 User Manual page 33

NOTE:
To disconnect an individual LU, use the Disconnect Volume command. To delete a single external
LU's mapping, use the Disconnect Volume command and then the Delete LU command. For
instructions, see Deleting external LU mappings (Delete
• Check Paths & Restore Vol.
This command checks if defined information about the mapped external LU and the actual external
LU status match. If the external LU can be used as the mapped local array volume, the external
LU is set to accept I/O, and you can continue using the external LU as a mapped LU.
Use this command to restore the external LU, which is set to reject host I/O operations by the
Disconnect Subsystem or Disconnect Volume command, as the mapped volume. You can execute
the Check Paths & Restore Vol. command for the entire array or an individual LU.
If an error occurs in the external storage path such that the command fails, correct the error so the
path can be restored, and execute the Check Paths & Restore Vol. command again.
For instructions, see
Paths & Restore Vol.).
NOTE:
When executing the Check Paths & Restore Vol. command, if the external LU is ready to be
restored as the mapped LU, the external LU is set to Available. However, if the external LU is not
ready to be restored, the external LU status remains as Blocked.
The following sections describe procedures to power the local and external arrays on or off.
CAUTION:
To power both the local and external arrays off, first power off the local array, and then power off the
external array.
CAUTION:
To power both the local and external arrays on, first power on the external array, and then power on the
local array. If both are supplied by a common failed power source, one option to ensure that the external
array is online and available before the XP powers up is to place the external array on an Uninterruptible
Power Supply (UPS).
Checking the connection status and resuming external LU operations (Check
External Storage XP user guide for the XP12000, XP10000, SVS200
LU).
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