2.9.2 SCSI backplane connections

The SCSI backplane has four 68-pin SCSI connectors to support SCA SCSI hard disks. The backplane design incorporates a hot swap feature to allow easy connection or removal of SCSI hard disks. The LEDs on the backplane connect to the front panel LEDs to indicate HDD access, HDD failure, thermal failure, or fan failure. See section “1.6 LED information.”

Front side

The front side of the SCSI backplane faces the front panel when installed. This side includes four SCSI connectors for the hot swap drive trays.

First backplane

 

 

 

 

 

 

 

 

 

Disk drive 1

 

 

 

 

 

 

 

HDD status LEDs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCSI ID = 0

 

 

 

 

 

 

 

 

Disk drive 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCSI ID = 1

 

 

 

 

 

 

 

HDD activity LEDs

 

 

 

 

 

 

 

Disk drive 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCSI ID = 2

 

 

 

 

 

 

 

 

Disk drive 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCSI ID = 3

 

 

 

 

 

 

 

 

If your barebone server supports a hot swap configuration for eight (8) hard disks, a second SCSI backplane comes with the system to connect drives 5 to 8.

Second backplane

 

 

 

 

 

 

 

 

 

Disk drive 5

 

 

 

 

 

 

 

HDD status LEDs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCSI ID = 4

 

 

 

 

 

 

 

 

Disk drive 6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCSI ID = 5

 

 

 

 

 

 

 

HDD activity LEDs

 

 

 

 

 

 

 

Disk drive 7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCSI ID = 6

 

 

 

 

 

 

 

 

Disk drive 8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCSI ID = 8

 

 

 

 

 

 

 

 

SCSI ID7 is reserved for the SCSI card.

2-30

Chapter 2: Hardware setup