Apple Workgroup Server 8150/110 - Manual (Page 52)

2 Check that the device has its own, unique ID number between 0 and 6.
See the previous section, “Setting the SCSI ID Number,” for details.
3 Use a SCSI cable to connect the device either to the server’s SCSI port or to the last
SCSI device already in the chain.
If the device is the first or only one you’re connecting, use a SCSI system
cable to connect it to the server’s SCSI port.
If the device is not the first one, use a SCSI peripheral interface cable to
connect it to the last device in the chain.
IMPORTANT To get the best results with SCSI devices, be sure to use high-
quality SCSI cables and check that the total length of the cables in a SCSI
chain does not exceed 6 meters (20 feet). Use SCSI cables manufactured by
Apple Computer or those of similar quality.
4 Make sure that only the last device in the SCSI chain has a terminator.
To ensure accurate transmission of information, a terminator must be at each
end of a SCSI chain. Your internal hard disk, which is the first device in the
chain, has a built-in terminator.
Some external SCSI devices from manufacturers other than Apple have a built-
in terminator. (Check the information that came with the device.) If the device
at the end of the SCSI chain does not have a built-in terminator, you need to
attach an external terminator.
36 Chapter 3 / Expanding Your Server and Connecting Other Equipment