Dell Precision 670 - Manual (Page 69)

Removing and Replacing Parts: Dell Precision Workstation 470 and 670 Computers User's Guide
file:///T|/htdocs/systems/ws670/EN/ug_en/before.htm[3/20/2013 9:31:52 AM]
1 interface cable
2 interface connector
When connecting and disconnecting a serial ATA cable, hold the cable by the connector at each end.
SCSI Device Installation Guidelines
This section describes how to configure and install SCSI devices in your computer. To install a SCSI device, you can use one
or both of the following SCSI controllers:
The SCSI connector on the system board. To locate the SCSI system board connector, see the system board illustration
(for the Dell Precision 670 computer, see " System Board Components ") or the interior service label.
NOTE: The system board SCSI controller supports hard drives only. Do not connect CD or DVD drives, tape drives, or
DAT drives.
A SCSI controller card installed in your computer.
SCSI ID Numbers
Internal SCSI devices must have a unique SCSI ID number from 0 to 15. If you are using the SCSI connector on the system
board and a SCSI controller card installed in your computer, you have two separate SCSI buses operating. Each SCSI bus has
a set of SCSI ID numbers from 0 to 15.
When SCSI devices are shipped from the factory, the default SCSI ID numbers are assigned as shown in the following table.
System Board Controller Controller Card
Device ID Device ID
Controller 7 Controller 7
Boot hard drive 0 Boot hard drive 0
CD or DVD drive 5
tape or DAT drive 6
NOTE: There is no requirement that SCSI ID numbers be assigned sequentially or that devices be attached to the cable in
order by ID number. If two or more devices use the same ID, your computer may hang during POST and in SCSI BIOS.
SCSI devices installed by Dell are configured correctly during the manufacturing process. You do not need to set the SCSI ID
for these SCSI devices.
If you attach additional optional SCSI devices, see the documentation for each device for information about setting the