Glossary-3
eXtended System
Control facility unit
(XSCFU) The server XSCF board that contains system administration function and
operates with independent processor.
F
fan A device that moves air currents into and out of the server.
firmware Firmware is the software that controls the server. The SPARC Enterprise M8000
and SPARC Enterprise M9000 servers have the following firmware; OpenBoot
PROM, POST, XSCF. See
XSCF.
The SAS controller, the GbE controller and control program for External I/O
Expansion Unit can be considered as firmware.
I
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, 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 PCI-Express cassettes
(upper four slots) and one PCI-X cassette (lowest slot).
IOU See I/O unit (IOU).
L
logical system board
(LSB)
The unit of grouping for memory, CPU and I/O, that 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 a maximum of 16 logical system boards. These can
be a combination of XSBs and PSBs.
LSB See logical system board (LSB).
