Dell PowerEdge 6400 User Manual

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Fahrenheit

FAT

Acronym for file allocation table. The file system structure used by MS-DOS to organize and keep track of file storage. The Microsoft Windows
NT

® operating system can optionally use a FAT file system structure.

FCC

Federal Communications Commission

flash memory

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.

format

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.

feet

FTP

File Transfer Protocol

gram(s)

gravities

Gigabyte(s). A gigabyte equals 1,024 megabytes or 1,073,741,824 bytes.

graphics coprocessor

See

coprocessor

graphics mode

See

video mode

guarding

A type of data redundancy that uses a set of physical drives to store data and a single, additional drive to store parity data. Using guarding, the
user's 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 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

GUI

graphical user interface