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Glossary 101
field-replaceable unit
(FRU) A part that can be replaced by field engineers when servicing the server.
FRU See field-replaceable unit (FRU).
hostid Unique system identifier.
I/O unit
(IOU) The I/O unit, which is common to midrange and high-end servers, monitors
I/O events and supports PCIe. Further, the midrange server supports PCI-X
cards. The PCI cards must first be inserted in a PCI cassette. The I/O unit for
the midrange servers supports up to five PCI cassettes: four PCIe cassettes
(upper four slots) and one PCI-X cassette (lowest slot).
Lightweight Directory
Access Protocol
(LDAP) Protocol for accessing information directories. LDAP is based on the standards
contained within the X.500 standard, but is significantly simpler.
log File containing a record of system activity.
log archive Repository for log files.
logical system board
(LSB) The unit of grouping for memory, CPU and I/O, which is visible to software.
The physical system board (PSB) or eXtended system board (XSB) assigned
with the system board number on the domain is recognized as the logical
system board. One domain consists of a maximum of 16 logical system boards.
These can be a combination of XSBs and PSBs.
LSB See logical system board (LSB).
privileges Specific permissions granted to users who belong to assigned groups. XSCF
users can have any one or more of the following privileges: platform
administrator, platform operator, domain administrator, domain operator, user
administrator, audit administrator, audit operator, and field engineer
privileges.
Quad-XSB The divided system board configured with the hardware resource on a physical
system board, which is segmented into four. See eXtended system board.
Service Processor A small system, that operates with an independent processor and directs the
system startup, reconfiguration, and fault diagnosis, plus giving access to the
domain(s). This is where the system management software (XSCF) runs.
Uni-XSB The system board with the undivided hardware resource on a PSB.
XCP See XSCF Control Package (XCP).
XSCF Control Package
(XCP) Runs on the Service Processor and contains XSCF, POST, and OpenBoot PROM
firmware.