Dell PowerEdge 2450 User Manual download pdf (Page 102)

10-2 Dell PowerEdge 2450 Systems Installation and Troubleshooting Guide

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NOTE: Dell recommends that you use only drives that Dell has tested and approved

for use with the SCSI backplane board.

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The SCSI drives must be configured as follows:

 Disable termination on the drives. The SCSI backplane board provides termination

for the SCSI bus.

 Set the SCSI ID on all drives to 0. All SCSI ID numbers for the drives are set by

the SCSI backplane board, as shown in Figure 10-1.

 Configure the drives so that the drive motor waits for a Start Unit command from

the SCSI host adapter before spinning.

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You may need to use different programs than those provided with the operating sys-

tem to partition and format SCSI hard-disk drives. See Chapter 3, "Installing and

Configuring SCSI Drivers," in the

User's Guide

for information and instructions.

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When you format a high-capacity SCSI hard-disk drive, be sure to allow enough time

for the formatting to complete. Long formatting times for these drives are normal. A

9-gigabyte (GB) hard-disk drive, for example, can take up to 2.5 hours to format.

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The four connectors on the SCSI backplane board are designated as SCSI ID 0

through SCSI ID 3 (see Figure 10-1). If a fifth hard-disk drive is installed in the periph-

eral bay, it is identified as SCSI ID 4.

To operate the backplane in a 1 x 4 configuration, attach a single host adapter to con-

nector SCSIA on the backplane board (see Figure A-2 in Appendix A, “Jumpers,

Switches, and Connectors”). You can operate the SCSI backplane board in a split 2 x 2

mode if a second, optional SCSI backplane daughter card is installed (see “Installing a

SCSI Backplane Daughter Card” found later in this section). In split mode, a host

adapter attached to connector SCSIB on the backplane controls slots SCSI 0 and SCSI

1, while the host adapter connected to SCSIA controls slots SCSI 2, SCSI 3, and the

fifth drive slot, SCSI 4, (if installed).

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Dell PowerEdge 2450 User Manual Page 102