HP ProLiant DL740 Server - Manual (Page 53)

Installing the Server in a Rack
Rack Considerations
Consider the following issues when working with server rack systems.
Rack Stability
Rack stability is of special concern when equipment is routinely installed, removed,
or accessed within the rack. Stability is achieved through the use of leveling feet
(jacks), stabilizers, and ballast kits.
Leveling Feet (Jacks)
Leveling feet are adjustable stabilizers that level the cabinet at the installation site
and take the balance off of the wheels.
Stabilizers
The anti-tip stabilizer provides stability and support when equipment is installed,
removed, or accessed within the rack. HP recommends that you use a stabilizer
option kit with a stand-alone rack.
Ballast Kits
Ballast kits can be added to a cabinet to increase side-to-side and front-to-back
mechanical stability. Lightly loaded cabinets may require ballast to keep them from
tipping over when a force is applied to the side of the cabinet. Heavily loaded
systems, depending on the particular configuration involved, usually do not require
ballast.
To be sure of rack stability, the minimum weight of the installed equipment should
be 114 kg (210 lb). Ballast kits should be added if a system has less than 114 kg
(210 lb) minimum weight. In addition, ballast kits should be installed if any single
system component weighs over 45 kg (100 lb) such that a minimum of 91 kg (200 lb)
of ballast and equipment remains in place when the component is extended from the
rack.
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Writer: Anna Roberts File Name: c-ch2 Installing the Server in a Rack.doc
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