Galaxy GHDX4 RAID iSCSI-SAS/SATA InstaHardware Reference Manual
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MUX Kit Working Theory
If SAS drives are preferred, these MUX boards will be unnecessary and
must be manually removed from the drive trays.
MUX Kit
The RAID Controller Module
The default size for the DDR-II DIMM module on RAID controllers is
2GB. RAID controller module contains a main circuit board, a
preinstalled 1GB memory, charger circuitry, and a daughter board
with two additional GbE iSCSI interfaces. The controller module
contains no user-serviceable components. Except when installing/
upgrading the cache memory inside, the controller module should
never be removed or opened.