Rack Installation Guide 11
To mark the rack, perform the following steps:
1
Using a felt-tip pen or masking tape, place a mark on the rack's front vertical rails where you want the
bottom of the system you are installing in the rack to be located.
The bottom of each 1-U space is at the middle of the narrowest metal area between holes (marked with
a horizontal line on some rack cabinets—see Figure 1-3).
2
Place a second mark 132 mm (5.25 inches) above the first mark you made (or count up nine holes in a
rack that meets EIA-310 standards). This mark should indicates the system's upper edge on the vertical
rails (see Figure 1-4).
Figure 1-4. Marking the Vertical Rails
1 Tape on vertical rail
1
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