Devices on the same SCSI bus must have unique ID numbers (however,
devices on different SCSI buses may use the same SCSI ID number).
Setting up a SCSI device to use with your server involves:
m setting the device’s SCSI ID number
m physically connecting the device to your server (including
appropriate termination)
m installing any necessary device drivers (and restarting your system)
Setting the SCSI ID number
If you have a SCSI device not sold by Apple, see the instructions that came
with that device for information on setting its SCSI ID number.
If you have an Apple SCSI device, set the SCSI ID number as follows:
1 Make sure your server is shut down and the SCSI device is turned off.
2 Choose a number between 0 and 6 that doesn’t duplicate the ID of any other SCSI device
connected to your server on the same SCSI bus.
The following table shows the server’s default SCSI ID numbers as well as the
SCSI ID numbers available for you to use on the internal/external bus.
Hard disk #1
(startup disk)
0234516SCSI ID #
Built-in
CD-ROM
drive
Internal
DAT drive
7
Internal
SCSI Bus A
(Fast SCSI-2,
10 MB/sec)
Internal/
External
SCSI Bus B
(SCSI-1,
5 MB/sec)
Server
CPU
Server
CPU
AvailableAvailableAvailableAvailable
Not
available
Not
available
Not
available
Not
available
Not
available
Not
available
(Optional)
(Optional)
Internal
hard disk #2
WARNING
Each SCSI device connected to your server must have its
own, unique SCSI ID number. Using two or more devices with the
same ID number (on the same SCSI bus) can cause your equipment
to malfunction.
Connecting hard disks and other SCSI devices 43
