Dell PowerEdge 1655MC - Manual (Page 20)

such as network drivers—must be loaded from the config.sys file (with a device= statement) or as memory-resident programs (usually, from the autoexec.bat
file). Others—such as video drivers—must load when you start the program for which they were designed.
diagnostics
A comprehensive set of tests for your system. Refer to your Installation and Troubleshooting Guide for more information about using diagnostics.
DIMM
Acronym for dual in-line memory module. A small circuit board containing DRAM chips that connects to the system board.
DIN
Acronym for Deutsche Industrie Norm.
directory
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.
DMI
Abbreviation for Desktop Management Interface. DMI enables the management of your system's software and hardware. DMI collects information about the
system's components, such as the operating system, memory, and asset tag. Information about the system's components is displayed as a MIF file.
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.
EID
Acronym for electronic identification number.
EMC
Abbreviation for Electromagnetic Compatibility.
EMI
Abbreviation for electromagnetic interference.
ERA/MC
Abbreviation for embedded remote access. ERA allows you to perform remote systems management.
ESD
Abbreviation for electrostatic discharge.
expanded memory
A technique for accessing RAM above 1 MB. To enable expanded memory on your system, you must use an EMM. You should configure your system to support
expanded memory only if you run application programs that can use (or require) expanded memory.
expansion bus
Your system contains an expansion bus that allows the microprocessor to communicate with controllers for peripheral devices, such as a network card or an
internal modem.
extended memory
RAM above 1 MB. Most software that can use it, such as the Microsoft® Windows® operating system, requires that extended memory be under the control of
an XMM.