HP Surestore Disk Array 12h - And FC60 Service Manual page 206

Note When is the NVSRAM information on the disks overwritten by the
NVSRAM settings on the controller?
The NVSRAM settings on the controller are copied to the disks in the following
situations. Each of these operation initiates a Start-Of-Day process, during
which the controller NVSRAM settings are copied to the disks.
- Following a syswipe operation. All information is cleared from the disks and
the controller NVSRAM settings are written to the disks.
- Following a firmware upgrade performed using the amdload command to
load new NVSRAM settings.
- If the NVSRAM settings on one of the controllers changes the disk information
is updated. This would only occur if the controller was removed, the NVSRAM
settings changed by installing it in another disk array, and then reinstalling the
controller in the original array
Moving a Volume Group from One Disk Array to Another
206