BX920 S4
Upgrade and Maintenance Manual
143
Expansion cards and backup units
7.2
SAS RAID HDD module
7.2.1
Basic information
A SAS RAID HDD module can be installed in a BX920 S4 server blade to
provide SAS RAID connections to SAS HDD/SSD drives. The SAS RAID HDD
module is also used to establish connection to the SAS connection blade via
SAS Expander mezzanine card, see section
.
Two SAS RAID HDD module variants are available.
– SAS RAID HDD module without cache (RAID level 0/1).
– SAS RAID HDD module with 512 MB cache (RAID level
0/1/1E/10/5/50/6/60) with Flash Backup Unit (FBU) option
I
Both SAS RAID HDD module variants require SAS HDD/SSD
backplanes and CPU 2 installed, see section
and
"Installing processors" on page 184
Figure 44: Mounting place for SAS RAID HDD module and FBU
1
FBU (Flash Backup Unit)
2
SAS RAID HDD module with 512 MB cache