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PERC 3/SC Hardware Installation 115
The PERC 3/SC controller automatically occupies TID 7 in the SCSI
channel. Eight-bit SCSI devices can use the TIDs from 0 to 6 only. 16-bit
devices can use the TIDs from 0 to 15. The arbitration priority for a SCSI
device depends on its TID. Table 8-8 shows the target IDs.
NOTICE: Non-disk devices (CD-ROM or tapes) should have unique SCSI IDs
regardless of the channel they are connected to. ID 0 cannot be used for non-
disk devices because they are limited to IDs 1 through 6. There is a limit of six
IDs for non-disk devices per controller.
Step 8—Power On Host System
Replace the computer cover and reconnect the alternating current (AC)
power cords. Turn power on to the host computer. Set up the power supplies
so that the SCSI devices are powered up at the same time as or before the
host computer. If the computer is powered up before a SCSI device, the
device might not be recognized.
During boot, the PERC 3 BIOS message appears:
PowerEdge Expandable RAID Controller BIOS Version x.xx
date
Copyright (c) Dell Computer Corporation
Firmware Initializing... [Scanning SCSI Device...(etc.)...]
The firmware takes several seconds to initialize. During this time the
adapter scans the SCSI channel. When ready, the following appears:
HA –0 (Bus 1 Dev 6) Type: PERC 3/SC Standard FW x.xx SDRAM=
xxxMB
0 Logical Drives found on the Host Adapter
0 Logical Drive(s) handled by BIOS
Press <Ctrl><M> to run PERC 3 BIOS Configuration Utility
Or press <Ctrl><H> to run WebBIOS
Table 8-8. Target IDs
Priority Highest Lowest
TID 765...2101514...98