Installing Hard-Disk Drives 10-11
In split-backplane mode, the drives connected to the backplane board are divided as
follows:
On a 2 x 2 backplane board, the SCSI channel attached to connector SCSIA on
the SCSI backplane board supports SCSI slots 0 and 1 (see Figure 10-2). The SCSI
channel attached to connector SCSIB on the backplane board supports SCSI slots
2 and 3.
On a 2 x 3 backplane board, the SCSI channel attached to connector SCSIA on
the SCSI backplane board supports SCSI slots 0, 1, and 2 (see Figure 10-2). The
SCSI channel attached to connector SCSIB on the backplane board supports SCSI
slots 3, 4, and 5.
The system automatically configures the backplane board as a split backplane if two
SCSI interface cables are connected—no jumper or software changes are required.
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To configure a 2 x 2 or 2 x 3 non-hot-pluggable SCSI backplane board as a single back-
plane, connect the computer’s on-board Ultra2/LVD host adapter to connector SCSIA
on the SCSI backplane board.
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The upgrade kit for the 1 x 6 SCSI backplane board includes the following parts:
1 x 6 hot-pluggable SCSI backplane board
SCSI hard-disk drive LED indicator panel
A hard-disk drive indicator panel data cable
A control cable that connects the system board and SCSI backplane board
Use the following procedure to install a 1 x 6 hot-pluggable SCSI backplane in your
computer.
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See “Removing the Computer Covers” in Chapter 7.
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32268BK0.BK : 32268100.FM Page 11 Monday, March 16, 1998 8:56 AM