Dell PowerVault MD1120 User Manual
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Glossary
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PXE — Preboot eXecution Environment. A way of booting a system via a LAN
(without a physical disk or bootable diskette).
RAC — Remote access controller.
RAID — Redundant array of independent disks. A method of providing data
redundancy. Some common implementations of RAID include RAID 0, RAID 1,
RAID 5, RAID 6, RAID 10, RAID 50, and RAID 60. See also guarding, mirroring, and
striping.
RAM — Random-access memory. The system’s primary temporary storage area for
program instructions and data. Any information stored in RAM is lost when you turn
off your system.
RAS — Remote Access Service. This service allows users running the Windows
operating system to remotely access a network from their system using a modem.
readme file — A text file, usually shipped with software or hardware, that contains
information supplementing or updating the product’s documentation.
read-only file — A read-only file is one that you are prohibited from editing or
deleting.
ROM — Read-only memory. Your system contains some programs essential to its
operation in ROM code. A ROM chip retains its contents even after you turn off your
system. Examples of code in ROM include the program that initiates your system’s
boot routine and the POST.
ROMB — RAID on motherboard.
rpm — Revolutions per minute.
RTC — Real-time clock.
SAS — Serial Attached SCSI. An interface that provides a direct, two-port
connection between a physical disk and a data controller.
SATA — Serial Advanced Technology Attachment. A standard interface between the
system board and storage devices.