Sun Microsystems Sun Fire V490, Setup And Rackmounting Manual

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Chapter 1 Installing a Sun Fire V490 Server Into a 4-Post Cabinet 9
Locate the Mounting Holes
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Locate and mark the rack rail holes that you will use to attach each slide assembly.
You can either count the holes on the vertical rack rails or use the Rack Alignment
template included with your documentation set. Make sure that each slide assembly
is installed at the same height front-to-back and side-to-side in the rack.
The Rack Alignment template is five rack units (8.75 in/22.22 cm) tall. Because the
holes on a standard rack rail are arranged in sets of three holes spaced 5/8ths,
5/8ths, and 1/2 of an inch apart, which
two holes you use for attaching a slide
assembly varies depending on exactly where in the rack the server is located.
One side of the Rack Alignment template is for 2-post rackmounting, the other side
is for 4-post rackmounting. For 2-post rackmounting instructions, see Chapter 2.
The 4-post mounting holes on the Rack Alignment template are for mounting the
slide bracket to the vertical rack rail. The upper and lower retainer screw openings
in the template locate the server retainer screws that hold the server in the rack after
it is installed.
The following figure shows both sides of the Rack Alignment template.
Upper retainer screw opening
Lower retainer screw opening
4-Post rackmounting holes
2-Post rackmounting holes