22
Appendix a: glossary
Table 8 lists technical terms and associated description.
Table 8.
Definition of technical terms
Term Definition
Chassis
Rack-mountable configuration of a server or a storage
component.
Dedicated circuit branch
A dedicated electrical circuit between a source and
distribution point.
Dynamic loading capacity
A dynamic environment is one where the HP MCS is
shipped on a shock pallet with equipment installed or
rolling HP MCSs with equipment installed to new
locations within the data center.
Electronic Industries Association (EIA)
An American association of electronic manufacturers
that sets standards, disseminates information, provides
industry-government liaison, and public relations.
Electromagnetic interference (EMI)
Disturbances of equipment operation caused by
electromagnetic fields from other sources.
Electrostatic discharge (ESD)
The flow of current across two devices that have
unintentionally accumulated differences in electrical
potential.
EOL (End of Life)
A term used for signifying discontinuation of products.
fixed stabilizer
An anti-tip stabilizer providing stability and support
when equipment is installed, removed, or accessed
within the HP MCS.
keyboard/video/mouse (KVM) switch
A switch that allows a single keyboard, video display
monitor, and mouse to be switched to any of a number
of computers.
PDU
Power Distribution Unit
PNP (Plug-and-Play)
A standard that gives computer users the ability to plug
a device into a computer and have the computer
recognize that the device is connected.
static loading capacity
A static environment is one where the HP MCS is
positioned into placed and the leveling feet are
extended prior to equipment being installed.
U
A standard unit of measure for designating the height
in computer enclosures and HP MCS cabinets. One U
equals 1.75 inches (44.5 mm). Measurements typically
go from the bottom of the HP MCS up.
For example, a 4U chassis is 7 inches (177.8 mm)
high. A 42U cabinet has 73.5 inches (1866.9 mm) of
usable mounting space.
UPS (uninterruptible power supply)
A device that allows a computer to continue running for
at least a short time after the primary power source is
lost.
