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8 Dell PowerVault 720N, 740N, and 760N Users Guide
IODVKPHPRU\
A type of EEPROM chip that can be re-
programmed from a utility on diskette
while still installed in a computer; most
EEPROM chips can only be rewritten with
special programming equipment.
IRUPDW
To prepare a hard-disk drive or diskette for
storing files. An unconditional format de-
letes all data stored on the disk. The
format command in MS-DOS 5.0 or higher
includes an option that allows you to unfor-
mat a disk, if you have not yet used the disk
for file storage.
IW
Abbreviation for feet.
)73
Abbreviation for file transport protocol.
J
Abbreviation for gram(s).
*
Abbreviation for gravities.
*%
Abbreviation for gigabyte(s). A gigabyte
equals 1,024 megabytes or
1,073,741,824 bytes.
*,'
Group identification number.
JURXS
A group of users defined in the filers
/etc/group
file.
JUDSKLFVFRSURFHVVRU
See coprocessor.
JUDSKLF VPRGH
See video mode.
JXDUGLQJ
A type of data redundancy that uses a set
of physical drives to store data and a sin-
gle, additional drive to store parity data.
Using guarding, the users data is protect-
ed from the loss of a single drive.
Guarding is sometimes preferred over
mirroring because it is more cost effective
in systems with a very high storage capac-
ity. However, guarded configurations are
significantly slower for applications that
frequently write to the array, because
each attempt to write to the array requires
multiple read and write commands to
maintain the parity information. If this is a
problem, mirroring or duplexing is a better
choice. See also mirroring, RAID 4, and
RAID 5.
*8,
Acronym for graphical user interface.
K
Abbreviation for hexadecimal. A base-16
numbering system, often used in pro-
gramming to identify addresses in the
computers RAM and I/O memory ad-
dresses for devices. The sequence of
decimal numbers from 0 through 16, for
example, is expressed in hexadecimal no-
tation as: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B,
C, D, E, F, 10. In text, hexadecimal num-
bers are often followed by
h
or preceded
by
0x
. MS-DOS conventional memorythe
first 640 KB of memory addressesis from
00000h to 9FFFFh; the MS-DOS upper
memory areamemory addresses be-
tween 640 KB and 1 MBis from A0000h
to FFFFFh.
KHDWVLQN
A metal plate with metal pegs or ribs
that help dissipate heat. Some micro-
processors include a heat sink.
+0$
Abbreviation for high memory area. The
first 64 KB of extended memory above
1 MB. A memory manager that conforms
to the XMS can make the HMA a direct
extension of conventional memory. See
also conventional memory, memory
manager, upper memory area, and XMM.
+,3
Acronym for the Dell OpenManage Hard-
ware Instrumentation Package. HIP
provides seamless integration with the In-
tel LANDesk Server Manager. Together,
HIP and LANDesk Server Manager allow
you to monitor your Dell servers and track
status information about Dell server
components.