Compaq W4000 Compaq Evo Workstation W4000 CMT Hardware Reference Guide - Page 47

devices on the same SCSI chain or on the same SCSI channel.

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Hard Drive Installation Guidelines I Every SCSI chain or circuit must be terminated (closed) at both ends. Termination can be accomplished through one of the following methods: ❏ Using a cable with a built-in terminator. This cable was shipped with your computer. ❏ Using a cable with a terminating resistor plug in the last connector. ❏ Connecting a SCSI device with its termination enabled into the last connector. ❏ Connecting an external SCSI device with its termination enabled to the external SCSI connector on the rear panel of the computer. I All external SCSI devices must be turned on before turning on the power to the computer. This action enables the SCSI controller to recognize the external devices. I The system accommodates a combination of internal and external SCSI devices, such as hard drives, tape drives, and CD-ROM drives. I Compaq does not recommend mixing different-width SCSI devices on the same SCSI chain or on the same SCSI channel. Mixing devices of different widths on the same chain or channel will always result in the data transfer rate of the slowest device in that chain. It is acceptable to mix Wide-Ultra2, Ultra 160, and Ultra 320 devices on a single channel. Do not put narrow devices on a channel with any device type other than another narrow device. For additional information about optional SCSI devices, refer to the documentation included with the device or contact your Compaq authorized dealer, reseller, or service provider. Ä CAUTION: Do not route cables near the air intake to the power supply. Cables routed in this manner can block airflow to the power supply, causing it to overheat. B-4 Hardware Reference Guide

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B
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4
Hardware Reference Guide
Hard Drive Installation Guidelines
■
Every SCSI chain or circuit must be terminated (closed) at both
ends. Termination can be accomplished through one of the
following methods:
❏
Using a cable with a built-in terminator. This cable was
shipped with your computer.
❏
Using a cable with a terminating resistor plug in the last
connector.
❏
Connecting a SCSI device with its termination enabled into
the last connector.
❏
Connecting an external SCSI device with its termination
enabled to the external SCSI connector on the rear panel of
the computer.
■
All external SCSI devices must be turned on before turning on the
power to the computer. This action enables the SCSI controller to
recognize the external devices.
■
The system accommodates a combination of internal and external
SCSI devices, such as hard drives, tape drives, and CD-ROM
drives.
■
Compaq does not recommend mixing different-width SCSI
devices on the same SCSI chain or on the same SCSI channel.
Mixing devices of different widths on the same chain or channel
will always result in the data transfer rate of the slowest device in
that chain. It is acceptable to mix Wide-Ultra2, Ultra 160, and
Ultra 320 devices on a single channel. Do not put narrow devices
on a channel with any device type other than another narrow
device.
For additional information about optional SCSI devices, refer to the
documentation included with the device or contact your Compaq
authorized dealer, reseller, or service provider.
Ä
CAUTION:
Do not route cables near the air intake to the power supply.
Cables routed in this manner can block airflow to the power supply,
causing it to overheat.