User's Manual

228 Glossary
ROM
Acronym for read-only memory. Your computer
contains some programs essential to its operation in
ROM code. Unlike RAM, a ROM chip retains its
contents even after you turn off your computer.
Examples of code in ROM include the program that
initiates your computer's boot routine and the POST.
ROMB
Acronym for RAID on motherboard. When a RAID
controller is integrated into a computer’s system board,
the system has ROMB technology.
RPM
Abbreviation for revolutions per minute.
RTC
Abbreviation for real-time clock. Battery-powered
clock circuitry inside the computer that keeps the date
and time after you turn off the computer.
SAS
Acronym for Serial Attached SCSI.
SCA
Acronym for single connector attachment.
schema
A collection of class definitions that describes managed
objects in a particular environment. A CIM schema is
a collection of class definitions used to represent
managed objects that are common to every
management environment, which is why CIM is called
the Common Information Model.
SCSI
Acronym for small computer system interface. An I/O
bus interface with faster data transmission rates than
standard ports. You can connect up to seven devices
(15 for some newer SCSI types) to one SCSI interface.
SDMS
Abbreviation for SCSI device management system.
sec
Abbreviation for second(s).
SEC
Abbreviation for single-edge contact.
serial port
An I/O port used most often to connect a modem to
your computer. You can usually identify a serial port
on your computer by its 9-pin connector.
settings
Settings are conditions of a manageable object help to
determine what happens when a certain value is
detected in a component. For example, a user can set
the upper critical threshold of a temperature probe to
75 degrees Celsius. If the probe reaches that temperature,
the setting results in an alert being sent to the management
console so that user intervention can be taken. Some
settings, when reached, can trigger a system shutdown
or other response that can prevent damage to the system.
service tag number
A bar code label on the computer that identifies it when
you call Dell for customer or technical support.
SGRAM
Acronym for synchronous graphics RAM.
shadowing
A computer's system and video BIOS code is usually
stored on ROM chips. Shadowing refers to the
performance-enhancement technique that copies
BIOS code to faster RAM chips in the upper memory
area (above 640 KB) during the boot routine.
SIMD
Abbreviation for Single Instruction Multiple Data.
SIMM
Acronym for single in-line memory module. A small
circuit board containing DRAM chips that connects to
the system board.