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

2. Transfer all of the components from the original blade system (particularly the OA modules, Virtual
Connect modules, SAS switches, and blades) to the new blade enclosure.
IMPORTANT:
Make sure that you keep the same server blade bay numbers when moving blades from the
old chassis to the new chassis.
3. Power up the blade enclosure, the blades should boot correctly.
Replacing a server blade or system board of a server blade
If a server blade or the system board of a server blade is replaced, use the following process. This
section does not describe any of the mechanical aspects of replacing the system board; instead, it
describes the implications for the X9720 Network Storage System software.
IMPORTANT:
Place server blades in the enclosure starting in the top bays first, moving left to right, followed by the
bottom bays, moving left to right.
To replace the server blade or its system board:
1. Shut down the server.
2. Note the server blade bay number, then remove the server blade from the blade enclosure.
3. If you are replacing the system board, replace with a new system board. See HP ProLiant BL460c
Server Blade Maintenance and Service Guide for instructions.
4. Ensure that all components of the original blade are in place in the blade. In particular, ensure
that:
• The original system disks are in place. This is essential.
• The memory size is the same as other blades in the system.
• The P700 Mezzanine card is in place.
5. Insert the server blade into its original bay in the blade chassis.
6. Connect to the iLO, create a user called "exds" and assign the same password as the other server
blades. The IP address is automatically configured to be the same as the original server blade.
7. Boot the server.
8. Run the exds_stdiag command to verify that the server blade can access storage.
To have password-less ssh support for additional server blades, or to access the X9720 itself without
specifying a password, add the keys of the new servers to the .ssh/authorized_keys on each pre-existing
server blade, and add the keys of all server blades to .ssh/authorized_keys on the new server blades.
Alternatively, you can re-generate keys for all server blades and distribute them appropriately.
Replacing a server blade disk drive
The “system disk” on an X9720 Network Storage System server blade comprises a logical RAID 1
disk which is mirrored over two physical SFF disk drives in the server blade. If one drive fails, the
remaining drive continues to service I/O for the server.
Replacing components in the X9720 Network Storage System134