3 System upgrade
82
Installing and removing the SAS
hardware RAID components
The system supports SAS hardware RAID through the active mid-plane
and backplane board. The server platform supports SAS hardware RAID
0, 1, 5, 6 (when available), 10, and 50 levels. Functionality for SAS
hardware RAID is enabled by using the following components:
•
RAID activation key and RAID cache
The RAID activation key works in conjunction with the RAID cache
to provide hardware RAID.
•
RAID BBU
If power to the storage I/O processor drops below specifications,
the RAID BBU maintains the contents of the DIMM by keeping the
DIMM in self-refresh mode until power is restored. After power is
restored, data can be safely written to drives, maintaining the
integrity of the disk array.
Installing and removing the RAID activation key
and RAID cache
To install the RAID activation key and RAID cache:
1
Observe the ESD precautions and pre-installation instructions
described on page 39.
2
Remove the power distribution board cover. Perform the
instructions described in “To remove a power distribution module
cover” section on page 48.
3
Remove the RAID activation key from its protective packaging.
4
Align then insert the activation key into the RAID activation key
connector on the active mid-plane board
(A)
.
5
Locate the RAID cache memory (DDR-2) slot on the active
mid-plane board.
Summary of Contents for Network Device Altos R520
Page 1: ...Acer Altos R520 Series User s Guide...
Page 10: ...x...
Page 11: ...1 System tour...
Page 38: ...1 System tour 28...
Page 39: ...2 System setup...
Page 47: ...3 System upgrade...
Page 99: ...4 BIOS setup...
Page 136: ...4 BIOS setup 126...
Page 137: ...5 Troubleshooting...
Page 158: ...5 Troubleshooting 148...
Page 159: ...Appendix A Acer Altos R520 rack installation guide...
Page 160: ...This appendix shows you how to set up the Acer Altos R520 server in a rack mount configuration...
Page 172: ...Appendix A Acer Altos R520 rack installation guide 162...
Page 173: ...Appendix B RAID configuration...
Page 184: ...174...