Dell PowerVault 745N - Manual (Page 9)

Rack Installation Guide
9
Installation Tasks
Installing a rack kit involves performing the following tasks in their numbered order:
1 Removing the rack doors
2 Marking the rack
3 Installing the slide assemblies in the rack
•
RapidRails slide assemblies
• VersaRails slide assemblies
4 Installing the system in the rack
5 Installing the cable-management arm
6 Routing cables
7 Replacing the rack doors
Removing the Rack Doors
See the procedures for removing doors in the documentation provided with your rack cabinet.
CAUTION:
Because of the size and weight of the rack cabinet doors, never attempt to remove or install
them by yourself.
CAUTION:
Store the two doors where they will not injure someone if the doors accidently fall over.
Marking the Rack
You must allow 1 U (44 mm, or 1.75 inches) of vertical space for each system you install in the rack.
Rack cabinets that meet EIA-310 standards have an alternating pattern of three holes per rack unit
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 rear vertical rails (see Figure 3).
Rack cabinets may have round or square holes.
NOTE:
The vertical rails may be marked by horizontal lines and numbers in 1-U increments. If you wish,
you can make a note of the number marking on the rack’s vertical rail. It is not necessary to mark or place
tape on the rack. If you choose this method, skip ahead to the procedure "Installing the RapidRails
Slide Assemblies."