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Dell PowerEdge T110 User Manual

Page 132

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132

Glossary

CPU — Central processing unit. See processor.

DC — Direct current.

DDR — Double-data rate. A technology in memory modules that potentially doubles
the data rate by transferring data on both the rising and falling pulses of a clock cycle.

device driver — A program that allows the operating system or some other program to
interface correctly with a peripheral.

DHCP — Dynamic Host Configuration Protocol. A method of automatically
assigning an IP address to a client system.

diagnostics — A comprehensive set of tests for your system.

DIMM — Dual in-line memory module. See also memory module.

DNS — Domain Name System. A method of translating Internet domain names, such
as www.example.com, into IP addresses, such as 208.77.188.166.

DRAM — Dynamic random-access memory. A system’s RAM is usually made up
entirely of DRAM chips.

driver — See device driver.

DVD — Digital versatile disc or digital video disc.

ECC — Error checking and correction.

EMI — Electromagnetic interference.

ERA — Embedded remote access. ERA allows you to perform remote, or "out-of-
band," server management on your network server using a remote access controller.

ESD — Electrostatic discharge.

ESM — Embedded server management.

expansion bus — Your system contains an expansion bus that allows the processor to
communicate with controllers for peripherals, such as NICs.

expansion card — An add-in card, such as a NIC or SCSI adapter, that plugs into an
expansion-card connector on the system board. An expansion card adds some
specialized function to the system by providing an interface between the expansion
bus and a peripheral.

expansion-card connector — A connector on the system board or riser board for
plugging in an expansion card.

F — Fahrenheit.

FAT — File allocation table. The file system structure used by MS-DOS

®

to organize

and keep track of file storage. The Microsoft

®

Windows

®

operating systems can

optionally use a FAT file system structure.

Fibre Channel — A high-speed network interface used primarily with networked

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