6.0 HP X9720 Network Storage System Administrator Guide (AW549-96034, December 2011)

2. Delete the volume groups, logical volumes, and physical volumes associated with the LUN.
3. Disconnect the SAS cables connecting both array controllers to the SAS switches.
CAUTION: Ensure that you remove the correct capacity block. Removing the wrong capacity
block could result in data that is inaccessible.
106 Upgrading the X9720 Network Storage System hardware and firmware