Adaptec AHA-2842A Bedienungsanleitung PDF herunterladen (Seite 22)

Glossary of Key Te r m s

Bus Mastering: Direct Memory Access (DMA) is a high performance method of data transfer in which the

host adapter’s on-board processor handles the transfer of data directly to and from the computer’s memory

with very little intervention from the CPU. This is the fastest method for data transfer available for multitask-

ing environments.Bus Master DMAtransfers leave the CPUfree to continue working while the data transfers

are taking place in the background.

EIDE: An umbrella term used to describe all of the emerging speciﬁcations, features and technologies that

stem from the original IDE interface.

EISA(Extended Industry Standard Architecture Bus): Acomputer bus standard compatible with ISA; a

32-bit data path. Up to 33 MB/sec data transfer rate.

Fast SCSI-2: Provides for performance and compatibility enhancements to SCSI-1, including a 16- or 32-bit

data path. Also referred to as SCSI-2 or Fast SCSI, Fast SCSI-2 can increase SCSI’s original synchronous data

transfer speed up to 10 MB/sec.

I/O (Input/Output): Refers to an operation, program, or device whose purpose is to enter data into or to

extract data from a computer.

I r D A(Infrared Data Association): An association for development of standards for interoperability of infrare d

technology for use in computers.

ISA(Industry Standard Architecture) Bus: IBM PC and compatible bus architecture with a 16-bit data path,

up to 3 MB/sec data transfer rate with PIO and up to 10 MB/sec data transfer rate with bus mastering (DMA).

MCA(Micro Channel Architecture) Bus: IBM PS/2 (models 50-95) and compatible computers. Can be driven

by multiple independent bus master processors. Up to 8 MB/sec data transfer rate.

M u l t i c h a n n e l : Ac o n ﬁguration where multiple SCSI channels on a single host adapter operate simultaneously in

a single computer system. Useful to increase the performance and fault tolerance of a system.

PCI (Peripheral Component Interconnect) Local Bus: Bus developed by Intel for attaching high speed pe-

ripheral devices to a computer system. 133 MB/sec data transfer rate.

PCMCIA(Personal Computer Memory Card International Association): Standard developed by an associa-

tion for credit-card sized memory and I/O cards for portable computers.

PIO (Programmed Input/Output): Amethod of data transfer in which the host microprocessor transfers data

to and from memory via the computer’s I/O ports. PIO enables very fast data transfer rates, especially in sin-

gle-tasking operating systems like DOS/Windows.

Plug and Play: Ah a rd w a re and software mechanism that provides an automatic way for the system to

s e l f - c o n f i g u re and optimally allocate system re s o u rces such as memory, I/O ports, IRQ, and DMAc h a n n e l s

between Plug-and-Play cards and other devices in the system.

RAID(Redundant Array of Inexpensive Disks): The architecture which determines how redundancy is

achieved and how data is distributed across the disk drives in a disk array.

SCSI (Small Computer System Interface): As t a n d a rd, intelligent, fast and multitasking I/O bus for connecting

PCs and peripheral devices.

UltraWide: Provides performance up to 40 MB/sec, based on a 16-bit data bus.

VL-Bus (VESALocal Bus): Aspeciﬁcation for a local-bus developed by the VESA(Video Electronics

Standards Association) local bus committee. Up to 40 MB/sec data transfer rate.

Wide SCSI: Provides performance up to 20 MB/sec, based on a 16-bit data bus. Also known as SCSI-3.

ssary of

y Terms

1 2 ... 17 18 19 20 21 22 23 24

Kommentare zu diesen Handbüchern

Keine Kommentare

Adaptec AHA-2842A Bedienungsanleitung Seite 22

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Schnittstellenkarten / Adapter Adaptec AHA-2842A