2. Secure the storage subsystem to the cabinet. Figure 20 shows how to secure
the DS4800 to the vertical members of the cabinet.
The following steps will help you safely secure the DS4800 in the rack cabinet:
a. Align the front mounting holes on the storage subsystem flanges with the
mounting holes on the cabinet.
b. Using the 5/16 (8 mm) hex nut driver, insert one M5 screw into the hole on
each flange, and tighten the screws completely to secure the front of the
storage subsystem to the cabinet.
3.
At the front and the rear of the rack cabinet, use the 5/16 (8 mm) hex nut driver
to finish tightening the other three M5 screws for each rail.
4. Continue with “Replacing the components.”
Replacing the components
Complete the following procedure to replace the components in the storage
subsystem:
1. Replace the power supply and fan units. Figure 21 on page 45 shows the
locations and correct orientation of the power supply and fan units and the
power supply and fan unit levers. The power supply and fan units are keyed to
always fit into the enclosure in the proper orientation. When the component is
oriented correctly, a relief along one edge of each component aligns with a
ledge in the enclosure. Before installing the component, turn the component so
that the indicator LEDs are near the center of the storage subsystem.
Screw
Mounting hole
Support rail
ds48029
Figure 20. Securing the DS4800 to the rack cabinet
44 IBM System Storage DS4800 Storage Subsystem: Installation, User’s, and Maintenance Guide
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