4. If necessary, remove the front and back rack doors.
Marking the location
You might need to mark the installation location. Use this procedure to perform this task.
To mark the installation location and install the nut clips into a rack, complete the following steps:
1. Determine where in the rack to place the system. Install units in the lower part of the rack first. Place
larger and heavier units in the lower part of the rack. Record the EIA location. The system is four
Electronic Industries Alliance (EIA) units high. An EIA unit is 44.45 mm (1.75 in.) in height. The rack
contains three mounting holes for each EIA unit of height. This system therefore is 177.8 mm (7 in.)
high and covers 12 mounting holes in the rack.
2. Facing the front of the rack and working from the right side, locate the bottom EIA unit that your
expansion unit uses. Make a note of the EIA location. Use tape, a marker, or a pencil to mark the
bottom hole of this EIA unit A. Mark the rack so the mark can also be seen from the rear of the rack.
Figure 1. Removing the filler panels
12 Power Systems: Installing the IBM Power 720 Express (8202-E4B) and IBM Power 740 Express (8205-E6B)