Dell PowerEdge 4300 Dell PowerEdge 4300 Systems User's Guide - Page 143

C, D, E, F, 10. In text, hexadecimal num

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Microsoft Windows NT® operating system can optionally use a FAT file system structure. Abbreviation for Federal Communications Commission. A type of EEPROM chip that can be reprogrammed from a utility on diskette while still installed in a computer; most EEPROM chips can only be rewritten with special programming equipment. To prepare a hard-disk drive or diskette for storing files. An unconditional format deletes all data stored on the disk. The format command in MS-DOS 5.0 or higher includes an option that allows you to unformat a disk if you have not yet used the disk for file storage. Abbreviation for foot/feet. Abbreviation for file transfer protocol. Abbreviation for gram(s). Abbreviation for gravities. cost-effective in systems with a very high storage capacity. 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. Acronym for graphical user interface. Abbreviation for hexadecimal. A base16 numbering system, often used in programming to identify addresses in the computer's RAM and I/O memory addresses for devices. The sequence of decimal numbers from 0 through 16, for example, is expressed in hexadecimal notation as: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F, 10. In text, hexadecimal numbers are often followed by h or preceded by 0x. MS-DOS conventional memory-the first 640 KB of memory addresses-is from 00000h to 9FFFFh; the MS-DOS upper memory area-memory addresses between 640 KB and 1 MB-is from A0000h to FFFFFh. A metal plate with metal pegs or ribs that help dissipate heat. Some microprocessors include a heat sink. Abbreviation for gigabyte(s). A gigabyte equals 1024 megabytes or 1,073,741,824 bytes. See coprocessor. See video mode. A type of data redundancy that uses a set of physical drives to store data and a single, additional drive to store parity data. Data is protected from the loss of a single drive. Guarding is sometimes preferred over mirroring because it is more 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. A host adapter implements communication between the computer's bus and the controller for a peripheral. (Hard-disk drive controller subsystems include integrated host adapter circuitry.) To add a SCSI expansion bus to your system, you must install the appropriate host adapter. Glossary 7

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Glossary
7
Microsoft Windows NT
®
operating sys-
tem can optionally use a FAT file system
structure.
)&&
Abbreviation for Federal Communications
Commission.
IODVK±PHPRU\
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 foot/feet.
)73
Abbreviation for file transfer protocol.
J
Abbreviation for gram(s).
*
Abbreviation for gravities.
*%
Abbreviation for gigabyte(s). A gigabyte
equals 1024 megabytes or 1,073,741,824
bytes.
JUDSKLFV±FRSURFHVVRU
See
coprocessor
.
JUDSKLFV±PRGH
See
video mode
.
JXDUGLQJ
A type of data redundancy that uses a set
of physical drives to store data and a
single, additional drive to store parity data.
Data is protected 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 capacity. However, guarded con-
figurations 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 informa-
tion. 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
programming to identify addresses in the
computer’s 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 memory—the
first 640 KB of memory addresses—is from
00000h to 9FFFFh; the MS-DOS upper
memory area—memory addresses be-
tween 640 KB and 1 MB—is from A0000h
to FFFFFh.
KHDW±VLQN
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
.
KRVW±DGDSWHU
A host adapter implements communica-
tion between the computer’s bus and the
controller for a peripheral. (Hard-disk drive
controller subsystems include integrated
host adapter circuitry.) To add a SCSI ex-
pansion bus to your system, you must
install the appropriate host adapter.