User`s manual

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
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E
F
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K
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M
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