Dell PowerVault 221S (SCSI) - Manual (Page 11)

Rack Installation Guide 1-7
2 Place a mark 13.3 centimeters (5.25 inches) above the original mark (or count up nine
holes in a rack that meets EIA-310 standards) and mark the rack’s front vertical rails
with a felt-tipped marker or place masking tape where the system’s upper edge will be
located (see Figure 1-4).
F i g u r e 1 - 4 . M a r k i n g t h e Ve r t i c a l R a i l s
Installing the RapidRails Mounting Rails
NOTE: If you are installing VersaRails rails, see “Installing the VersaRails Mounting Rails.”
1 At the front of the rack cabinet, position one of the mounting rails so that its
mounting-bracket flange fits between the marks or tape you placed on the rack (see
Figure 1-5).
2 Align the rail mounting-bracket flange (on the front of the rail) with the square holes
in the front vertical rails (see Figure 1-5).
tape marking locations for
top and bottom of system
3-U (5.25 inches) between
rails (drawing is not to
scale)