HP ProLiant 4500 Compaq ProLiant 4500 Servers Maintenance and Service Guide - Page 23

Boards, Hot-Pluggable Drive Backplane Board

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Removal and Replacement Procedures 2-11 IMPORTANT: All SCSI hard drives on the same SCSI bus must be internal (within the server) or in an external storage system, but not both. A configuration with both internal and external SCSI hard drives requires more than one single-channel SCSI controller. A multi-channel controller, such as the Compaq SMART SCSI Array Controller, supports both internal and external SCSI hard drives on separate SCSI buses. IMPORTANT: All integrated 32-Bit SCSI-2 Controllers must be terminated by connecting one of the following to the Fast-SCSI-2 or Fast-Wide SCSI-2 connector on the system board: - Terminated SCSI cable - SCSI cable that is also attached to the lower SCSI-2 connector of a hot-pluggable backplane - 50-pin Active Terminator (Spare Part No. 169178-001) Boards This section describes how to remove and replace the hot-pluggable hard drive backplane board, memory modules, system, processor and option boards. Hot-Pluggable Drive Backplane Board Figure 2-13. Removing the Backplane Board 1. Label and remove all hard drives. CAUTION: Be sure to label the drives before removing so that they can be replaced in their original positions. Failure to do so will result in permanent data loss. Maintenance and Service Guide

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Removal and Replacement Procedures
2-11
Maintenance and Service Guide
IMPORTANT:
All SCSI hard drives on the same SCSI bus must be internal
(within the server) or in an external storage system, but not both. A
configuration with both internal and external SCSI hard drives requires more
than one single-channel SCSI controller.
A multi-channel controller, such as the
Compaq SMART SCSI Array Controller, supports both internal and external
SCSI hard drives on separate SCSI buses.
IMPORTANT:
All integrated 32-Bit SCSI-2 Controllers must be terminated by
connecting one of the following to the Fast-SCSI-2 or Fast-Wide SCSI-2
connector on the system board:
- Terminated SCSI cable
- SCSI cable that is also attached to the lower SCSI-2 connector of a
hot-pluggable backplane
- 50-pin Active Terminator (Spare Part No. 169178-001)
Boards
This section describes how to remove and replace the hot-pluggable hard drive backplane board,
memory modules, system, processor and option boards.
Hot-Pluggable Drive Backplane Board
Figure 2-13.
Removing the Backplane Board
1.
Label and remove all hard drives.
CAUTION:
Be sure to label the drives before removing so that they can be
replaced in their original positions.
Failure to do so will result in permanent data
loss.