Users Guide

118 Glossary
NTFS
Abbreviation for the Windows NT File System option in the Windows NT
operating system. NTFS is an advanced file system designed for use specifically
within the Windows NT operating system. It supports file system recovery,
extremely large storage media, and long file names. It also supports object-oriented
applications by treating all files as objects with user-defined and system-defined
attributes. See also FAT and FAT32.
NTLM
Abbreviation for Windows NT LAN Manager. NTLM is the security protocol for
the Windows NT operating system.
NUMA
Non-Uniform Memory Architecture.
OID
Abbreviation for object identifier. An implementation-specific integer or pointer
that uniquely identifies an object.
PAM
Acronym for Pluggable Authentication Modules. PAM allows system
administrators to set an authentication policy without having to recompile
authentication programs.
parameter
A value or option that you specify to a program. A parameter is sometimes called
a switch or an argument.
Peak Headroom
The theoretical maximum power drawn by a power supply minus the peak power
drawn.
PERC
Acronym for Expandable RAID controller.
peripheral device
An internal or external device—such as a printer, a disk drive, or a keyboard—
connected to a system.
book.book Page 118 Monday, March 9, 2009 2:15 PM