IBM 2104 Model DU3 - Manual (Page 23)

Removing the Disk Drive Modules and Dummy Disk Drive Modules
CAUTION:
A 2104 Model DU3 weighs up to 38.5 kg (85 lb) with disk drive modules
installed. Do not attempt to lift the 2104 Model DU3 into the rack unless all the
disk drive modules have been removed.
Attention: Disk drive modules are fragile. Handle them with care, and keep them
well away from strong magnetic fields.
1. Refer to Figure 3.
2. Before you start to remove any modules, make a list of which disk drive
modules are in which slots in the 2104 Model DU3. This action helps you to
reinstall the modules into their correct slots after you have installed the 2104
Model DU3 into the rack.
Disk drive modules have a serial number label 1 . This label carries the last 8
to 10 digits of the serial number of the disk drive, and also the disk drive type
(SCSI) and capacity (for example, 18.2 GB).
Note: Each disk drive module also has a SCSI address that is related to its
position in the 2104 Model DU3. Disk drive modules must be reinstalled
into the same slots from which they were removed.
Figure 3. Disk Drive Modules showing position of the Serial Number Label
Installing a 2104 Model DU3 7