Configuration factors 7
• Weight—Sort all of the components by weight, placing the heaviest components at the bottom of the
rack.
• KVM Switch—Mount the switch either behind the keyboard or within a sidewall cavity to provide a
0U space solution.
• RKM—Install the RKM at a level that is the correct ergonomic position where your shoulders and
neck are relaxed.
• Monitor—Arrange the screen a minimum of 4Us above the keyboard tray.
• Rack-mountable flat-panel monitor—Select a position to accommodate the desired viewing height (a
minimum of 4Us above the keyboard tray).
• Balance—Be sure to balance the weight load between the racks, placing the heaviest components at
the bottom of the rack. For example, if you have several UPS units and several servers, do not put all
of the UPS units into one rack. Distribute them evenly in the bottom positions of each rack.
For further information regarding component placement, refer to the Important Safety Instructions that are
shipped with the rack. Also, refer to the Safety and Comfort Guide—Precautions for Server and Network
Products on the HP website (http://www.hp.com
) (search for Safety and Comfort Guide).
Additional rack considerations
Consider the following specifications and components, with regard to your specific rack configuration:
• Power—If a UPS is installed, do not exceed its output rating. Be sure to review the installation
instructions provided with each component for important cautions and warnings.
• PDUs—Install PDUs before installing other components.
• Height—The height of the rack and of rack-mountable components is measured in U increments,
where U = 4.5 cm (1.75 in). When you are configuring your rack installation, remember that the
total U measurement of the components you want to install cannot exceed the stated U height of the
rack.
• Keyboard—The rack keyboard requires installation of a 1U keyboard drawer rack option kit.
• Monitor—The monitor requires installation of a monitor/utility shelf rack option kit unless you are
using a rack-mountable flat-panel monitor.
• Server console switch—If a console switch is configured, use the CPU-to-console switch cable
included with the server. The standard distance between the console switch and the keyboard,
monitor, and mouse can vary by 3-, 7-, 12-, 20-, and 40-ft lengths.
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