18
Server Chassis Features
SAS/SATA Backplanes
The system can support either an active SAS or a passive SAS/SATA backplane. The backplanes
provide the platform support for peripheral drives and hot-swap SAS or SATA hard drives. To eliminate
several cables, the backplanes are also used as a pathway for signals from the server board to various
platform interconnects, including those for the control panel and peripheral drives.
The passive backplane acts as a pass-through for the SAS/SATA data from the drives to the
SATA controller on the server board or a SAS/SATA controller add-in card. It provides the physical
requirements for the hot-swap capabilities. The active backplane has a built-in SAS controller that
does not need communication with the baseboard controller or an add-in card.
Figure 10. Active Backplane Components
A.
Backplane Power
H.
Fan 2 Power
B.
USB Floppy Connector
I.
Front Panel Connector
C.
SW RAID Activation Key
J.
Fan 1 Power
D.
Fan 5 Power
K.
Screw
E.
Bridge Board Connector
L.
Front Panel USB
F.
Fan 4 Power
M.
SAS/SATA Connectors
G.
Fan 3 Power
B
A
E
F
J
I
K
H
L
G
M
C
D