Cabling A Raid Adapter Or Single Scsi Channel Using One Hot-Swap Drive Scsi Backplane - IBM 8480 - Eserver xSeries 205 Maintenance And Troubleshooting Manual

Cabling a RAID adapter or single SCSI channel using one hot-swap
drive SCSI backplane
You can install an optional RAID adapter in your server to control the internal
hot-swap hard disk drives. The illustrations in this section show the cabling for
internal hot-swap hard disk drives. You can also cable a RAID adapter to external
hard disk drives. See your RAID adapter option documentation for complete
instructions for installing a RAID adapter in your server and for additional
information about RAID adapters.
One end of the SCSI cable is attached to the connector on the standard SCSI
backplane, and the other end is attached to the internal SCSI channel connector on
the PCI extender board or RAID adapter.
If you are connecting the server to more than two SCSI channels, you might need
to purchase additional SCSI cables. Consult your IBM marketing representative or
reseller for additional information about the number and types of cables that your
server configuration requires.
The following procedure describes the single-channel cable routing that is
necessary when you install a RAID adapter. The illustrations in this section are
examples. The cabling that you use for your server depends on your system
configuration.
Notes:
1. See the documentation that comes with your adapter for any cabling
2. Cable identifiers are printed on the cables that come with your server and
Complete the following steps to cable a single SCSI channel on an installed RAID
adapter using the standard hot-swap drive SCSI backplane:
1. Determine the number of SCSI channels that you want to use on the RAID
2. Review the information in "Installation guidelines" on page 37 and "Safety
3. Turn off the server and peripheral devices and disconnect all power cords and
4. If your server comes with a SCSI connector on the PCI extender board,
46
IBM xSeries 205 Type 8480: Hardware Maintenance Manual and Troubleshooting Guide
instructions.
options. Use these identifiers to connect the cables to the correct connectors.
For example, the hard disk drive cables are labeled "HDD option."
adapter.
information" on page 119.
external cables; then, remove the side cover (see "Removing the side cover" on
page 40).
disconnect the SCSI cable from the internal SCSI connector on the PCI
extender board.
Attention: When you route the SCSI cable, observe these precautions:
v Do not block the ventilated space in front of the fan assembly.
v Do not route the SCSI cable over the memory board assembly.