Dell OptiPlex GX1 User Manual
Page 91
Installing Drives: Dell OptiPlex GX1 and GX1p Midsize Managed PC Systems
file:///C|/infodev/2013/eDoc/OpGX1/SIG/drives.htm[2/21/2013 12:07:25 PM]
device(s). Both types of internal SCSI cables contain terminators on the device end of the cables, so the
devices connected to these cables must have termination disabled (see Figure 13). External SCSI cables do
not have terminators, so termination must be enabled on the SCSI device itself.
Figure 13. Internal SCSI Cables
NOTICE: Do not connect devices to all three connectors (internal narrow connector, internal wide
connector, and external connector) on a single SCSI host adapter card. Such a configuration is a
violation of the SCSI specification. You can safely connect devices to any two of these three
connectors on a single SCSI host adapter card.
If you are installing only internal SCSI devices, verify that termination is enabled on the SCSI host adapter
and disabled for all other internal SCSI devices. If you are installing both internal and external SCSI devices,
verify that termination is enabled on the external SCSI device and disabled for the SCSI host adapter and all
internal SCSI devices.
General Procedure for Installing SCSI Devices
CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals,
disconnect them from their electrical outlets, and then wait at least 5 seconds before you
remove the computer cover. Also, before you install an expansion card, see "
."
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 "
NOTICE: 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.
2. Unpack each SCSI device and prepare it for installation.
Configure the device for a SCSI ID number and, if necessary, enable or disable termination. For
instructions, see the documentation that came with the SCSI device and "