Dell PowerVault 715N (Rackmount NAS Appliance) User Manual

Page 25

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cache, which is set up as an 8-KB read-only instruction cache and an 8-KB read/write data cache.

IRQ

Abbreviation for interrupt request. A signal that data is about to be sent to or received by a peripheral device travels by

an IRQ line to the microprocessor. Each peripheral connection must be assigned an IRQ number. For example, the first

serial port in your system (COM1) is assigned to IRQ4 by default. Two devices can share the same IRQ assignment, but

you cannot operate both devices simultaneously.

ISA

Acronym for Industry-Standard Architecture. A 16-bit expansion bus design. The expansion-card connectors in an ISA

system are also compatible with 8-bit ISA expansion cards.

KB

Abbreviation for kilobyte(s), 1,024 bytes.

Kbit(s)

Abbreviation for kilobit(s), 1,024 bits.

key combination

A command requiring you to press multiple keys at the same time. For example, you can reboot your system by pressing

the <Ctrl><Alt><Delete> key combination.

kg

Abbreviation for kilogram(s), 1,000 grams.

kHz

Abbreviation for kilohertz, 1,000 hertz.

lb

Abbreviation for pound(s).

LED

Abbreviation for light-emitting diode. An electronic device that lights up when a current is passed through it.

local bus

On a system with local-bus expansion capability, certain peripheral devices (such as the video adapter circuitry) can be

designed to run much faster than they would with a traditional expansion bus. Some local-bus designs allow peripherals

to run at the same speed and with the same width data path as the system's microprocessor.

m

Abbreviation for meter(s).

Mb

Abbreviation for megabit.

MB

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