User's Manual

228 Glossary
power unit
A set of power supplies in a system chassis.
ppm
Abbreviation for pages per minute.
PQFP
Abbreviation for plastic quad flat pack, a type of microprocessor socket in which
the microprocessor chip is permanently mounted.
probe
An electronic sensor for measuring a quantity or determining system state at a
particular point within a system. Server Administrator can monitor temperature,
voltage, fan, memory, current and chassis intrusion probes. The probes provide a
snapshot of the measured quantity (such as the temperature at a particular place
and time) or state (a chassis intrusion has or has not occurred).
program diskette set
The set of diskettes from which you can perform a complete installation of an
operating system or application program. When you reconfigure a program, you
often need its program diskette set.
protected mode
An operating mode supported by 80286 or higher microprocessors, protected
mode allows operating systems to implement:
• A memory address space of 16 MB (80286 microprocessor) to 4 GB (Intel386 or
higher microprocessor)
• Multitasking
• Virtual memory, a method for increasing addressable memory by using the hard
drive
The Windows NT, Windows 2000, Windows XP, OS/2
®
, and UNIX
®
32-bit
operating systems run in protected mode. MS-DOS cannot run in protected
mode; however, some programs that you can start from MS-DOS, such as the
Windows operating system, are able to put the computer into protected mode.
provider
A provider is an extension of a CIM schema that communicates with managed
objects and accesses data and event notifications from a variety of sources.
Providers forward this information to the CIM Object Manager for integration
and interpretation.