HP V142 Rack User Guide

Before you begin 6
• 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—Before installing other components, install the PDUs.
• 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.
NOTE: National electrical regulations governing the installation of building wiring require
that an appropriate cable, meeting fire-safety standards, must be used any time cabling is
routed:
• Through an overhead drop-ceiling
• Under raised flooring
• From room to room
• From floor to floor
Be sure that the cable jacket or sleeving is made of material that does not burn easily and
does not exude toxic fumes when exposed to heat. Be sure that the cable you have selected is
appropriate for your installation site. If you require a U.S. plenum-rated (CL2P) cable, contact
your local HP authorized reseller to obtain any of the following options:
• 149363-B21-20-foot plenum cable
• 149364-B21-40-foot plenum cable
• Rack baying option kits—The number of baying kits needed to join a series of racks is one less than
the number of racks in the suite. Each baying kit supplies parts to bay two cabinets on 600 mm (24
in) center line spacing.
• Side panels—Only one set of side panels is required for each row of bayed racks.
• Stabilizer kit—A stabilizer kit is either required or recommended, depending on your rack
configuration.
o Rack rows with four or more racks bayed together do not need a stabilizer installed.
o Single racks or bays of less than four connected racks must have a stabilizer installed.
General component placement guidelines
WARNING: To reduce the risk of personal injury or damage to the equipment, adequately
stabilize the rack before extending a component outside the rack. Extend only one component
at a time. A rack may become unstable if more than one component is extended.
WARNING: To reduce the risk of personal injury or damage to the equipment, always load
the heaviest item first on the bottom of the rack and then move up the rack. This procedure
makes the rack bottom-heavy and helps prevent the rack from becoming unstable.