Dell PowerEdge R805 System, Hardware Owner'S Manual

Page: 185 / 200

Glossary
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memory module — A small circuit board containing DRAM chips that connects to
the system board.
memory — An area in your system that stores basic system data. A system can
contain several different forms of memory, such as integrated memory (ROM and
RAM) and add-in memory modules (DIMMs).
MHz — Megahertz.
mirroring — A type of data redundancy in which a set of physical drives stores data
and one or more sets of additional drives stores duplicate copies of the data.
Mirroring functionality is provided by software. See also
guarding , integrated
mirroring , striping , and RAID .
mm — Millimeter(s).
ms — Millisecond(s).
NAS — Network Attached Storage. NAS is one of the concepts used for
implementing shared storage on a network. NAS systems have their own operating
systems, integrated hardware, and software that are optimized to serve specific
storage needs.
NIC — Network interface controller. A device that is installed or integrated in a
system to allow connection to a network.
NMI — Nonmaskable interrupt. A device sends an NMI to signal the processor
about hardware errors.
ns — Nanosecond(s).
NTFS — The NT File System option in the Windows 2000 operating system.
NVRAM — Nonvolatile random-access memory. Memory that does not lose its
contents when you turn off your system. NVRAM is used for maintaining the date,
time, and system configuration information.
parity — Redundant information that is associated with a block of data.