5.5 HP StorageWorks X9720 Network Storage System Administrator Guide (AW549-96026, March 2011)

12. Disconnect from the interconnect by pressing Ctrl-Shift-_ (the Control, Shift, and underscore keys)
and then press the D key for "D)isconnect".
13. Exit from the OA using "exit".
NOTE:
Wait at least 60 seconds after seating the SAS switch before removing another SAS switch.
The SAS switch now provides a redundant access path to storage. Storage units will balance I/O
between both switches on their subsequent restarts.
Replacing the P700m mezzanine card
1. Shut down the server blade.
2. Remove the server blade.
3. Replace the P700m.
4. Replace the blade in the original blade bay. The server automatically boots.
5. Run the exds_stdiag command to validate the firmware version and that all capacity blocks
are seen by the server.
Replacing capacity block parts
Adding capacity blocks
See Adding capacity blocks.
Removing capacity blocks
See Removing capacity blocks.
Replacing capacity block hard disk drive
Replace a hard disk drive (HDD) when it is reported in the failed or predict-fail state.
IMPORTANT:
Before replacing a failed hard disk drive, perform the following steps:
1. Check the global service indicator (GSI) light on the front panel of the hard drive drawer. If the
GSI light is lit amber, there is a problem with one of the enclosure components such as a power
supply, fan, or I/O module. Address that issue before replacing the hard disk drive. If the issue
is with the I/O module, and it is corrected, then the HDD LED light should turn green after the
HDD is replaced.
2. Before replacing the HDD with a new drive, try removing the drive, waiting two minutes, and
re-seating the drive. If it continues to report a failure, replace the drive.
Replacing components in the X9720 Network Storage System138