Dell PowerEdge 2650 Rack Installation Guide - Page 13

Place a mark 88 mm 3.5 inches above the original mark you made or count up six

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Figure 1-3. One Rack Unit 1 U (44 mm or 1.75 inches) 12.7 mm (0.5 inch) 15.9 mm (0.625 inch) 15.9 mm (0.625 inch) 12.7 mm (0.5 inch) CAUTION: If you are installing more than one system, install the slide assemblies so that the first system is installed in the lowest available position in the rack. 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 1-4). 2 Place a mark 88 mm (3.5 inches) above the original mark you made (or count up six 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 1-4). Rack Installation Guide 1-7

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Rack Installation Guide
1-7
Figure 1-3.
One Rack Unit
CAUTION: If you are installing more than one system, install the slide assemblies
so that the first system is installed in the lowest available position in the rack.
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 1-4).
2
Place a mark 88 mm (3.5 inches) above the original mark you made (or count up six
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 1-4).
1 U (44 mm or 1.75 inches)
12.7 mm (0.5 inch)
15.9 mm (0.625 inch)
15.9 mm (0.625 inch)
12.7 mm (0.5 inch)