Dell OpenManage Server Administrator Version 5.5 Guia do Utilizador descarregar pdf (Página 173)

Glossary 171

RAC

Acronym for remote access controller.

RAID

Acronym for redundant array of independent drives.

RAM

Acronym for random-access memory. A system's primary temporary storage area

for program instructions and data. Each location in RAM is identified by a number

called a memory address. Any information stored in RAM is lost when you turn

off your system.

RAMDAC

Acronym for random-access memory digital-to-analog converter.

RAW

Unprocessed. The term refers to data that is passed along to an I/O device without

being interpreted. In contrast, cooked refers to data that is processed before being

passed to the I/O device. It often refers to uncompressed text that is not stored

in any proprietary format. The term comes from UNIX, which supports cooked

and raw modes for data output to a terminal.

RBAC

Abbreviation for role-based access control.

RDRAM

Acronym for Rambus™ DRAM

. A dynamic RAM chip technology from Rambus,

Inc. Direct RDRAMs are used in systems. Direct RDRAM chips are housed in

RIMM modules, which are similar to DIMMs but have different pin settings. The

chips can be built with dual channels, doubling the transfer rate to 3.2 GB/sec.

read-only file

A read-only file is one that you are prohibited from editing or deleting. A file can

have read-only status if:

• Its read-only attribute is enabled.

• It resides on a physically write-protected diskette or on a diskette in a write-

protected drive.

• It is located on a network in a directory to which the system administrator has

assigned read-only rights to you.

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Dell OpenManage Server Administrator Version 5.5 Guia do Utilizador Página 173