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Glossary 95
memory address — A specific location, usually expressed as a hexadecimal number,
in the system’s RAM.
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 disks stores data
and one or more sets of additional disks 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).
MS-DOS
®
— Microsoft Disk Operating System.
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 2003 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.