Sun Microsystems Fire X4540, Administration Manual

Page: 143 / 154

Glossary 129
L
light-emitting diode
(LED) A device that converts electrical energy into light that is used to display
activity.
M
master controller unit Also called a master unit, the main controller unit in a partner-group
configuration.
media access control
(MAC) address A unique address that identifies a storage location or a device.
megabyte (MB or
Mbyte) One megabyte is equal to one million bytes.
megabytes per second
(MB/s) A performance measurement of the sustained data transfer rate.
N
namespace In the tree structure of a Lightweight Directory Access Protocol (LDAP)
directory, a set of unique names from which an object name is derived and
understood. For example, files are named within the file namespace and
printers are named within the printer namespace.
Network File System
(NFS) A protocol that enables disparate hardware configurations to function together
transparently.
Network Information
Service (NIS) A system of programs and data files that UNIX systems use to collect, collate,
and share specific information about machines, users, file systems, and
network parameters throughout a network of computer systems.
network interface card
(NIC) An internal circuit board or card that connects a workstation or server to a
networked device.