Replacing the RAID components
CAUTION:
To reduce the risk of personal injury or damage to the equipment, consult the safety
information and user documentation provided with the server and RAID component before
replacing it.
IMPORTANT:
When replacing the p1224 controller or SAS expander card be sure to always
replace the card into the same slot from which it was removed. Make sure the card is connected
to the SuperCapacitor module and to the internal SAS data storage. On an HPE StoreOnce 5100
System, if the system has been expanded be sure to also connect the card to the external SAS
storage.
p1224 RAID controller
The p1224 RAID controller card is located in:
•
HPE StoreOnce 3100 System: PCIe slot 1 and is connected to the backplane.
•
HPE StoreOnce 3500 Series and HPE StoreOnce 5100 System: PCIe slot 3 and is connected
to the SAS expander card in slot 2 and to the backplane. In the HPE StoreOnce 5100 System
it is also connected to any external SAS storage.
Figure 21 HP p1224 RAID card
1
2
3
4
6
5
Connector to internal SAS disks
2
Connector to external SAS storage (HPE 5100 only)
1
SuperCapacitor (located in the center of the unit,
clipped to the floor of the chassis behind the disk
cage)
4
Cache module
3
LEDs
6
SuperCapacitor connector
5
The RAID cache module and SuperCapacitor
There is one SuperCapacitor and cache module for each RAID Controller. 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.
44
Replacing the p1224 RAID controller and components
