Fujitsu Siemens Computers SPARC Enterprise M8000 User Manual
Page 156
Glossary-2
SPARC Enterprise Mx000 Servers Dynamic Reconfiguration User’s Guide
•
September 2007
eXtended System
Control facility unit
(XSCFU)
The XSCF board for this server which contains system administration function
and operates with independent processor.
field-replaceable unit
(FRU)
A part that can be replaced by field engineers when servicing the system.
firmware
Firmware is the software to control the system. These servers have the
following firmware; OpenBoot PROM, POST, XSCF. For details, see the
definition of OpenBoot PROM, POST, XSCF in this glossary. SAS controller,
GbE controller and control program for IOBOX may be considered as
firmware.
Hardware Control
Program (HCP)
A date file which contains cluster of XSCF, POST, and OpenBoot PROM
firmware settings.
I/O unit (IOU)
The unit of physical print board and mechanical components, consists of I/O
controller. The combination/segmentation of CMU and IOU configures the
system (domain).
logical system board
(LSB)
A logical unit name of an XSB to which a logical number (LSB number) is
assigned. LSB is used together with LSB number when domains are
constructed and it is referred to by Solaris OS.
motherboard unit
(MBU)
The main board assembly to which other boards and components are
connected in the servers with a single XSCF Unit. The servers with redundant
XSCF Units do not have motherboard unit, but CMUs.
OpenBoot PROM
A layer of software that does the following: takes control of the configured this
system from the Power-on self-test (POST) and builds data structures in
memory, and boots the operating system. The OpenBoot PROM is IEEE 1275-
compliant.
physical system board
(PSB)
The PSB is made up of physical components, and can include 1 CMU and 1
IOU or just 1 CMU. In midrange servers, the CMU is mounted on MBU. A PSB
can also be used as to describe a physical unit for addition/deletion/exchange
of hardware. The PSB can be used in one of two methods, one complete unit
(undivided status) or divided into four subunits.
power-on self-test
(POST)
A program that takes uninitialized this system hardware, probes and tests its
components, configures the working components into a coherent initialized
system, and transfers control to the OpenBoot PROM.