Fujitsu Siemens Computers SPARC Enterprise M5000 User Manual page 156

eXtended System
Control facility unit
(XSCFU)
field-replaceable unit
(FRU)
firmware
Hardware Control
Program (HCP)
I/O unit (IOU)
logical system board
(LSB)
motherboard unit
(MBU)
OpenBoot PROM
physical system board
(PSB)
power-on self-test
(POST)
Glossary-2
SPARC Enterprise Mx000 Servers Dynamic Reconfiguration User's Guide
The XSCF board for this server which contains system administration function
and operates with independent processor.
A part that can be replaced by field engineers when servicing the system.
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.
A date file which contains cluster of XSCF, POST, and OpenBoot PROM
firmware settings.
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).
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.
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.
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.
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.
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.
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September 2007