HP Professional sp750 Compaq Professional Workstation SP750 Hardware Reference - Page 62

Guidelines for Installing a SCSI Device, drive in bays 4 or 5

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❏ Connect an external SCSI device with its termination enabled to the external SCSI connector on the rear panel of the computer. s Turn on all external SCSI devices before turning on the power to the computer. This enables the SCSI controller to recognize the external devices. s All SCSI hard drives must be either internal or external, but never both. The system accommodates a combination of other internal and external SCSI devices, such as tape and CD-ROM drives. s Compaq does not recommend mixing different width SCSI devices on the same SCSI chain or on the same SCSI controller. Mixing devices of different widths on the same chain or controller will always result in a data transfer rate of the slowest machine in that chain. It is acceptable to mix Wide-Ultra2 and Ultra3 SCSI devices, but do not mix Narrow devices with any devices other than Narrow devices. .or additional information about optional SCSI devices, refer to the documentation included with the device or contact your Compaq authorized dealer, reseller, or service provider. 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. Guidelines for Installing a SCSI Device Compaq does not support mixing Ultra ATA and SCSI hard drives in the same system. On a Compaq Deskpro Workstation AP250, if you are replacing a hard drive in bays 4 or 5, the replacement drive should be of the same type as the drive being removed. If you are replacing the Ultra ATA hard drive with a SCSI hard drive, you will need a SCSI device option kit and the SCSI controller option kit. The controller option kit contains the SCSI controller and a cable that supports multiple SCSI devices. Before installing a SCSI device on any workstation: s Verify the SCSI ID of the drive and, if necessary, set the SCSI ID to a unique number. See “ Guidelines for SCSI Devices” in this appendix or refer to the documentation included with the device. s Determine if the device requires termination to be enabled or disabled. Set the termination if necessary. See the section “ Using a SCSI Cable” or refer to the documentation included with the device. Hardware Reference Guide C-3

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Hardware Reference Guide
C-3
Compaq Confidential - Need to Know Required
Connect an external SCSI device with its termination enabled
to the external SCSI connector on the rear panel of the
computer.
■
Turn on all external SCSI devices before turning on the power to
the computer. This enables the SCSI controller to recognize the
external devices.
■
All SCSI hard drives must be either internal or external, but never
both. The system accommodates a combination of other internal
and external SCSI devices, such as tape and CD-ROM drives.
■
Compaq does not recommend mixing different width SCSI devices
on the same SCSI chain or on the same SCSI controller. Mixing
devices of different widths on the same chain or controller will
always result in a data transfer rate of the slowest machine in that
chain. It is acceptable to mix Wide-Ultra2 and Ultra3 SCSI
devices, but do not mix Narrow devices with any devices other
than Narrow devices.
±or additional information about optional SCSI devices, refer to the
documentation included with the device or contact your Compaq
authorized dealer, reseller, or service provider.
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.
Guidelines for Installing a SCSI Device
Compaq does not support mixing Ultra ATA and SCSI hard drives in
the same system.
On a Compaq Deskpro Workstation AP250, if you are replacing a hard
drive in bays 4 or 5, the replacement drive should be of the same type
as the drive being removed. If you are replacing the Ultra ATA hard
drive with a SCSI hard drive, you will need a SCSI device option kit
and the SCSI controller option kit. The controller option kit contains
the SCSI controller and a cable that supports multiple SCSI devices.
Before installing a SCSI device on any workstation:
■
Verify the SCSI ID of the drive and, if necessary, set the SCSI ID
to a unique number. See ² Guidelines for SCSI Devices³ in this
appendix or refer to the documentation included with the device.
■
Determine if the device requires termination to be enabled or
disabled. Set the termination if necessary. See the section ² Using a
SCSI Cable³ or refer to the documentation included with the
device.