Installation guide

G-7
Glossary
Installation Guide
PIROM: Processor Information ROM. Processor
Information ROM (PIROM) contains information
about the specific processor in which it resides.
This information includes robust addressing
headers to allow for flexible programming and
forward compatibility, core and L2 cache electrical
specifications, processor part and S–spec
numbers, and a 64–bit processor number.
PMB: Platform Management Board. Links the
server to the PAP unit.
PNP: Plug aNd Play. The ability to plug a device
into a computer and have the computer recognize
that the device is there.
POST: Power On Self Test. When power is turned
on, POST (Power–On Self–Test) is the diagnostic
testing sequence (or “starting program”) that a
computer runs to determine if hardware is working
correctly.
PROM: Programmable Read-Only Memory.
PUID: PAM Universal/Unique IDentifier. PAM
software allocates a PUID (PAM Universal / Unique
Identifier) to each hardware / software object to
guarantee unambiguous identification. The PUID
for each hardware element can be obtained by
hovering the mouse over the corresponding
element in the PAM tree, e.g.:
PAM:/CELLSBLOCK_<NAME>/MODULE_x/QBB_
y/CPU_y.
Q
QBB: Quad Brick Board. The QBB is the heart of
the Bull NovaScale Server, housing 4 Itanium  2
processors and 16 DIMMs. Each QBB
communicates with other CSS Module components
via 2 high–speed bidirectional Scalability Port
Switches. See SPS or FSS.
R
RAID: Redundant Array of Independent Disks. A
method of combining hard disk drives into one
logical storage unit for disk-fault tolerance.
RAM: Random Access Memory. A temporary
storage area for data and programs. This type of
memory must be periodically refreshed to maintain
valid data and is lost when the computer is
powered off. See NVRAM and SRAM.
RAS: Reliability, Availability, Serviceability.
Real–time clock: The Integrated Circuit in a
computer that maintains the time and date.
RFI: Radio Frequency Interference.
RJ45: 8–contact regular jack.
RMC: Remote Maintenance Console.
ROM: Read-Only Memory. A type of memory
device that is used to store the system BIOS code.
This code cannot be altered and is not lost when
the computer is powered off. See BIOS, EPROM
and Flash EPROM.
RS-232 Port: An industry standard serial port. See
Serial Port.
RSF: Remote Service Facilities.
RTC: Real Time Clock.
RTL: Register Transfer Level.
S
[e-mail]: SAN Administration Tool.
SAL: System Abstraction Layer. See PAL.
SAN: Storage Area Network. A high–speed
special–purpose network that interconnects
different kinds of data storage devices with
associated data servers on behalf of a larger
network of users.
SAPIC: Streamlined Advanced Programmable
Interrupt Controller message.
SBE: Single Bit Error.
SBSP: System BootStrap Processor. See BSP.
Scheme: Defines a set of domains.
SCI: Scalable Coherent Interface.
SCSI: Small Computer System Interface. An input
and output bus that provides a standard interface
used to connect peripherals such as disks or tape
drives in a daisy chain.
SDR: Sensor Data Record.
SDRAM: Synchronous Dynamic Random Access
Memory. A type of DRAM that runs at faster clock
speeds than conventional memory. See DRAM.
SEL: System Event Log. A record of system
management events. The information stored
includes the name of the event, the date and time
the event occurred and event data. Event data may
include POST error codes that reflect hardware
errors or software conflicts within the system.
Serial Communication: Data sent sequentially,
one bit at a time.
Serial Port: Connector that allows the transfer of
data between the computer and a serial device.
See COM1 or COM 2.Shell is a Unix term for the
interactive user interface with an operating system.