Installation guide

Glossary-12 SPARC Enterprise Mx000 Servers Glossary • March 2012
Physical System Board
(PSB)
A board consisting of physical parts, such as one CMU and one I/O Unit
(IOU), or one CMU. In the SPARC Enterprise M4000/M5000 server, a CMU
is mounted on an MBU. The PSB may be used to indicate physical units for
hardware addition, removal, or replacement. The PSB is used as one unit
(not divided) or four divided units.
POST See Power-On Self-Test (POST).
Power Supply Unit (PSU) A unit that inputs AC power and outputs several types of voltage.
Power-On Self-Test
(POST)
A diagnostic test that is automatically executed when the server is powered
on. POST checks memory, disks, and other hardware components for errors
and then passes control to OpenBoot PROM.
PSB See Physical System Board (PSB).
PSB division type The setting for system board segmentation, either Uni-XSB or Quad-XSB.
PSU See Power Supply Unit (PSU).
PSU Backplane (PSUBP) The backplane for the power supply unit. See also Backplane (BP).
PSUBP See PSU Backplane (PSUBP).
Q
Quad-XSB One of the PSB division types. A PSB that is logically divided into four is
called Quad-XSB. Quad-XSB is used to explain the PSB division type or
status.
R
register A term used in Dynamic Reconfiguration to register system boards in the
Domain Component List (DCL)
release A term used in Dynamic Reconfiguration to release the registration of a
system board from the Domain Component List (DCL).
remove A term used in Dynamic Reconfiguration to remove a system board.
replace A term used in Dynamic Reconfiguration to remove and replace a system
board.
reserve A term used in Dynamic Reconfiguration to reserve a system board such
that it will be added or deleted the next time the domain is powered on.