HP Store Once 4900 Backup Maintenance and Service Guide
Table Of Contents
- Backup system service and maintenance guide for HP StoreOnce 4900 Backup
- Contents
- 1 Spares part numbers for field replacement
- 2 General information
- 3 Identifying problems
- 4 Replacing the system motherboard
- 5 The HP p1228 RAID controller
- 6 RAID cache module and SuperCapacitor failures
- 7 Disk enclosures
- 8 Disk replacement
- 9 The QR ISO image
- 10 Support and other resources
- 11 Documentation feedback
Replacing the RAID cache module and SuperCapacitor
NOTE: The recommendation is to replace both the SuperCapacitor and RAID cache module at
the same time, regardless of which element has failed.
RAID cache module and SuperCapacitor location
There is one SuperCapacitor and cache module for each RAID Controller. (This means the HP
StoreOnce 4900 Backup has two modules.) The RAID cache module is slotted onto the RAID card;
the SuperCapacitor is located in the center of the unit, clipped to the floor of the chassis behind
the disk cage.
These items ensure cache contents are maintained after a loss of power. The LEDs on the cache
module flash when the SuperCapacitor is disconnected and POST error messages provide more
information.
Replacing the RAID cache module and SuperCapacitor
1. Remove the cover from the HP StoreOnce Backup system, as described in the appropriate HP
ProLiant Maintenance and Service guide, and locate the module.
2. Look at the LEDs on the module. If the LEDs are blinking amber the module should be replaced.
If they are flashing amber and green, the module is disconnected.
3. If the module is disconnected, reseat it on the HP p1228 RAID card. If it is damaged, remove
it, dispose of the old module and replace it with the new one. Check that the cable is connected
correctly to the SuperCapacitor..
Figure 9 SuperCapacitor module connector on RAID card
LEDs2SuperCapacitor connector1
4. Replace the cover and power up the HP StoreOnce Backup system. Check the status of the
system on the Hardware page of the StoreOnce GUI. If this does not resolve the problem, the
associated RAID card may need replacing.
5. Run the StoreOnce CLI command, hardware show firmware node, to check that the
firmware on the replacement part is correct; it will be listed under the node (server) details.
Run the StoreOnce CLI command, hardware update firmware node, with appropriate
parameters to update it, if necessary. See the HP StoreOnce Backup CLI Reference Guide for
more details.
NOTE: You may need a cold reboot to successfully install the new firmware revision.
22 RAID cache module and SuperCapacitor failures