Dell Mini Tower System manual General Procedure for Installing Scsi Devices

tion is enabled on the external SCSI device and disabled for the SCSI host adapter and all internal SCSI devices.

CAUTION: Do not connect devices to all three con- nectors (internal narrow connector, internal wide connector, and external connector) on a single SCSI host adapter card. Such a configuration is a viola- tion of the SCSI specification. You can safely connect devices to any two of these three connec- tors on a single SCSI host adapter card.

General Procedure for Installing SCSI Devices

Configure and install one or more SCSI devices in your computer as follows:

1.Determine which connector on the internal SCSI cable you will attach to each SCSI device.

See “SCSI Configuration Guidelines” found earlier in this section.

2.Unpack each SCSI device and prepare it for installation.

CAUTION: Ground yourself by touching an unpainted metal surface on the back of the computer.

CAUTION: When you unpack the drive, do not set it on a hard surface, which may damage the drive. Instead, set the drive on a surface, such as a foam pad, that will sufficiently cushion it.

Configure the device for a SCSI ID number and, if necessary, enable or disable termination. For instruc- tions, see the documentation that came with the SCSI device as well as “SCSI Configuration Guide- lines” found earlier in this section.

3.If you are installing a SCSI host adapter card, configure the adapter card.

For instructions on configuring the card, see the doc- umentation that came with the adapter card as well as “SCSI Configuration Guidelines” found earlier in this section.

4.Install the SCSI devices as appropriate.

•To install a SCSI hard-disk drive, complete steps 3 through 7 of “Installing an EIDE Hard- Disk Drive in the Hard-Disk Drive Bracket” found earlier in this chapter. Then continue with step 5 of this procedure.

•To install a SCSI tape drive, CD-ROM drive, or DAT drive, complete steps 2 through 6 of “Installing a Drive in a 5.25-Inch Drive Bay” found earlier in this chapter. Then continue with step 5 of this procedure.

•To install an external SCSI tape drive, continue with step 5 of this procedure.

5.If you are installing a SCSI host adapter card, install it in an expansion slot now.

See “Installing an Expansion Card” in Chapter 6.

If a SCSI host adapter card is already installed, remove, reconfigure, and reinstall the card at this time. See the documentation that came with the SCSI host adapter card as well as “Removing an Expansion Card” and “Installing an Expansion Card” in Chapter 6.

Connect the hard-disk drive access cable to the SCSI host adapter card and to the HDLED connector on the riser board (see Figure 6-3). This cable carries a signal from the SCSI host adapter card to the hard- disk drive access indicator on the computer’s front panel whenever one of the SCSI hard-disk drives is accessed.

6.Attach the SCSI cable to each SCSI device.

For additional instructions on connecting SCSI devices, see “SCSI Cable and SCSI Termination” found earlier in this section.

If you are installing an internal SCSI device, firmly press the SCSI cable’s header connector onto the 50- or 68-pin connector on the back of the device.

CAUTION: You must match the colored strip on the cable with pin 1 on the drive’s interface connector to avoid possible damage to your system.

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