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2.4
SCSI backplane boards
The system includes two SCSI backplane boards to support up to six
Ultra160 SCA SCSI hard disk drives. The backplane design incorporates a
hot-swap feature to allow easy connection or removal of SCSI hard disks.
Front side
The front side of a backplane has three 80-pin connectors available for
SCA SCSI hard disk drives. The hard disks are externally accessible from
the system front panel.
80-pin SCSI connectors
Back side
The back side of a backplane includes the SCSI, power, SMB, and LED
connectors. The two backplane boards in the AR200 RAID system are the
same but have different cable connections. The following pictures show
the right and left backplane board connectors and indicate to which they
are connected.
Left board (viewed from the back)
SCSI In connector
SMB In/Out
(to DA3100 SCSI Ch. 3)
Upper pins: to SMB In/Out
Bottom pins: to system
Backplane
power connector
(connect P3 plug from
power supply)
SCSI Out connector
(for terminator on the rear panel)
ASUS AR200 RAID system
SLOT1
SLOT2
SLOT3
SCSI In connector
(to DA3100 SCSI Ch. 0)
on right board
interface board
Backplane
HDD LED
power connector
connector
(connect P5 plug from
power supply))
Right board (viewed from the back)
SMB In/Out
Upper pins: to SMB In/Out
Bottom pins: to power supply
SCSI Out connector
(for terminator on the rear panel)
on left board
HDD LED
connector
2-5
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