Dell PowerEdge 7150 - Manual (Page 26)

DIN
Acronym for Deutsche Industrie Norm.
display adapter
See video adapter.
DMA
Abbreviation for direct memory access. A DMA channel allows certain types of data transfer between RAM and a device to bypass the microprocessor.
DRAC
Acronym for Dell OpenManage Remote Assistant Card.
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 chip in the system.
drive-type number
Your system can recognize a number of specific hard-disk drives. Each is assigned a drive-type number that is stored in NVRAM. The hard-disk drive(s) specified in
your system's System Setup program must match the actual drive(s) installed in the system. The System Setup program also allows you to specify physical parameters
(cylinders, heads, write precomp, landing zone, and capacity) for drives not included in the table of drive types stored in NVRAM.
EMI
Abbreviation for electromagnetic interference.
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. See also conventional memory, EMM, extended memory, and
memory manager.
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.
expansion-card connector
A connector on the system's system board for plugging in an expansion card.
extended memory
RAM above 1 MB. Most software that can use it, such as Windows, requires that extended memory be under the control of an XMM. See also conventional memory,
expanded memory, memory manager, and XMM.
external cache memory
A RAM cache using SRAM chips. Because SRAM chips operate at several times the speed of DRAM chips, the microprocessor can retrieve data and instructions
faster from external cache memory than from RAM.
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-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.
ft
Abbreviation for foot/feet.
FTP
Abbreviation for file transfer protocol.
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