System information

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Eclipse™ 2640 SAN Router Administration and Configuration Manual
Glossary
vital product data VPD. System-level data stored by field-replaceable units (FRUs) in
the electrically erasable programmable read-only memory. This data
includes serial numbers and identifies the manufacturer.
VM® See virtual machine.
VM/ESA® Virtual machine/Enterprise Systems Architecture. See virtual
machine.
volt A measure of the difference in electrical potential between two points
in a conductor, equal to one ohm resistance carrying a constant
current of one ampere, with a power dissipation of one watt (D). See
volts alternating current; volts direct current.
volts alternating
current
VAC. A term for classifying the system in which volts exist. VAC
means that the volts exist in a circuit where the electricity can travel
in either direction. Contrast with
volts direct current. See volt.
volts direct current VDC. A term for classifying the system in which volts exist. VDC
means that the electricity has a specific path it must follow. Contrast
with
volts alternating current. See volt.
VPD See vital product data.
VS See virtual storage.
W
WAN See wide area network.
warning message A message that indicates a possible error has been detected. See also
error message; information message.
watt A unit of power in the International System equal to one joule
(Newton-meter) per second (D).
wide area network WAN. A network capable of transmission over large geographic
areas that uses transmission lines provided by a common-carrier. See
also
local area network; metropolitan area network; metro-area
storage area network (mSAN).