Dell PowerEdge 2650 Installationshandbuch - Seite 9

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Universal-Hole Spacing Racks

Industry-standard two-post racks with universal-hole spacing have an alternating pattern of

three holes per U with center-to-center hole spacing (beginning at the top hole of a 1-U

space) of 15.9 mm, 15.9 mm, and 12.7 mm (0.625 inch, 0.625 inch, and 0.5 inch) for the

front and back vertical column of holes (see Figure 1-2).

F i g u r e 1 - 2 .

Tw o - P o s t , O p e n - F r a m e R e l a y R a c k U n i v e r s a l - H o l e S p a c i n g

44 mm (1.75 inches) (1 U)

Wide-Hole Spacing Racks

Some two-post racks with wide-hole spacing have an alternating pattern of two holes per U

with center-to-center hole spacing (beginning at the top hole of a 1-U space) of 31.7 mm

and 12.7 mm (1.25 inches and 0.5 inch) for the front and back vertical column of holes (see

Figure 1-3).

F i g u r e 1 - 3 .

Tw o - P o s t , O p e n - F r a m e R e l a y R a c k W i d e - H o l e S p a c i n g

44 mm (1.75 inches) (1 U)

15.9 mm (0.625 inch)

12.7 mm (0.5 inch)

15.9 mm (0.625 inch)

12.7 mm (0.5 inch)

31.7 mm (1.25 inches)

2 - Po st Ra ck I n stallation

1-5