Hardware Reference Guide B-3
Compaq Confidential - Need to Know Required
Writer: Kristen Cover Part Number: 123456-001 File Name: f-appb.doc
Last Saved On: 07/25/00 8:05 AM Last Saved By: Kristen Cover
■ Every SCSI chain or circuit must be terminated (closed) at both
ends. Termination can be accomplished by using the terminating
feature on the device or by using a terminated cable.
✎
Some devices may not have terminating jumpers on the
device. Termination on these devices must be achieved with
terminated cable.
Turn on an external SCSI device before turning on power to
the computer. This enables the system board controller to
recognize the external SCSI device and automatically reset.
When an external SCSI device is connected to the external
SCSI connector on the rear panel of the computer, that device
becomes the end of the SCSI chain and must be terminated.
■ The system accommodates a combination of internal and external
SCSI devices, such as SCSI tape, CD-ROM drives, and hard
drives.
✎
When an IDE hard drive and SCSI hard drive are both
installed, the system can boot only from the IDE hard drive.
✎
Before you can install a SCSI device, you must first verify the
SCSI ID of the device and, if necessary, set the SCSI ID to a
new number. Be sure that each SCSI device on the SCSI
chain has a unique SCSI ID number.
Second, you must determine if the device ought to have
termination enabled or disabled. Set the termination if
necessary.
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