Dell PowerVault NX300, Hardware Owner'S Manual, Page: 181 / 192

Glossary
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MAC address — Media Access Control address. Your system’s unique hardware
number on a network.
mAh — Milliampere-hour(s).
Mb — Megabit(s); 1,048,576 bits.
MB — Megabyte(s); 1,048,576 bytes. However, when referring to hard-drive capacity,
the term is often rounded to mean 1,000,000 bytes.
Mbps — Megabits per second.
MBps — Megabytes per second.
MBR — Master boot record.
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).
memory key — A portable flash memory storage device integrated with a USB
connector.
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
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).
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.
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