10 Rack Installation Guide
To mark the rack, perform the following steps:
1
Place a mark on the rack’s front vertical rails where you want to locate the bottom of the system you are
installing in the rack cabinet.
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 mark approximately 8.75 inches above the original mark you made (or count up 15 holes in a
rack that meets EIA-310 standards) and mark the rack’s front vertical rails with a felt-tipped pen or
masking tape (if you counted holes, place a mark just above the top hole). This mark or piece of tape
indicates where the system’s upper edge will be located on the vertical rails (see Figure 1-3).
Figure 1-3. Marking the Vertical Rails
1 tape on vertical rail
1
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