NOTE: The recommendation is to replace both the SuperCapacitor and RAID cache module
at the same time, regardless of which element has failed.
NOTE: Never move cache modules from one RAID controller to another within or between
systems.
If the SuperCapacitor is disconnected on the RAID card in the HPE StoreOnce System, the
system will not boot. If boot fails, it is a good idea to check that the SuperCapacitor is seated
correctly.
If the SuperCapacitor or cache module has failed, the system may still boot with error messages
and it will run more slowly. Remove and dispose of the old module, and replace it with the new
one. Check that the cable is connected correctly to the SuperCapacitor.
Figure 22 SuperCapacitor module connector on RAID card
LEDs2SuperCapacitor connector1
HPE SAS expander card (HPE StoreOnce 5100 System and HPE StoreOnce 3500
Series)
If no disks are showing on the Storage-Shelves page of the StoreOnce GUI, there may be a
problem with the HPE SAS expander card.
The part number for a replacement card is: 761879-001. It must be installed in PCIe slot 2.
Mini-SAS cables connect the RAID controller card to the SAS expander card, and the SAS
expander card to the hard disk drive backplane.
NOTE: Tuck the mini-SAS cables to be routed to the backplane into the side of the chassis.
See Figures 17 and 18.
Replacement procedure
The following example describes how to replace the p1224 card. The general procedure is the
same to access the SAS expander card or the SuperCapacitor cache module.
Replacing the RAID components 45
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