Dell PowerEdge 1750 Ser's Manual page 23

Directories help keep related files organized on a disk in a hierarchical, "inverted tree" structure. Each disk has a "root" directory; for example, a c:\> prompt
normally indicates that you are at the root directory of hard drive C. Additional directories that branch off the root directory are called subdirectories.
Subdirectories may contain additional directories branching off them.
DMA
Abbreviation for direct memory access. A DMA channel allows certain types of data transfer between RAM and a device to bypass the microprocessor.
DNS
Abbreviation for Domain Name System.
DRAM
Abbreviation for dynamic random-access memory. A system's RAM is usually made up entirely of DRAM chips. Because DRAM chips cannot store an electrical
charge indefinitely, your system continually refreshes each DRAM microprocessor in the system.
DVD
Abbreviation for digital versatile disk.
ECC
Abbreviation for error checking and correction.
EEPROM
Acronym for electrically erasable programmable read-only memory.
EMC
Abbreviation for Electromagnetic Compatibility.
EMI
Abbreviation for electromagnetic interference.
ERA/O
Abbreviation for embedded remote access option. ERA/O allows you to perform remote, or "out-of-band," server management on your network server using
an optional remote access controller (RAC) card.
ESD
Abbreviation for electrostatic discharge.
expansion bus
Your system contains an expansion bus that allows the microprocessor to communicate with controllers for peripheral devices, such as a network card.
expansion-card connector
A connector on the system board or riser board for plugging in an expansion card.
F
Abbreviation for Fahrenheit.
FAT
Acronym for file allocation table. The file system structure used by MS-DOS® to organize and keep track of file storage. The Windows NT® operating systems
can optionally use a FAT file system structure.
FCC
Abbreviation for Federal Communications Commission.
flash memory
A type of EEPROM chip that can be reprogrammed from a utility on diskette while still installed in a system; most EEPROM chips can only be rewritten with
special programming equipment.
format
To prepare a hard drive or diskette for storing files. An unconditional format deletes all data stored on the disk.
FSB
Abbreviation for front side bus. The FSB is the data path and physical interface between the microprocessor and the main memory (RAM).
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