Apple Workgroup Server 9150/120 - Manual (Page 56)

8 If you are installing a drive in slot C, D, or E, remove the screws that hold the top bracket
of the drive assembly. Note that if you are adding a drive to slot A or B, you can install
the drive without removing the top bracket.
9 Make sure that you’ve installed any necessary SCSI ID jumpers or ID switches and that
there are no resistor packs on the drives you are adding. (The Workgroup Server 9150
has built-in SCSI termination.) There are usually three resistor packs; often they are
yellow or orange.
Note: Some newer-model disk drives do not have resistor packs; they use one
jumper to indicate whether SCSI termination is on or off. Be sure to check the
manufacturer’s specifications for your disk drive when setting termination.
A
B
C
D
E
40 Chapter 3 / Expanding Your Server and Connecting Other Equipment