Compaq AlphaServer GS80 User Manual page 176

Power cabinet
Power input
Power system
manager
Primary PCI box
PSM
QBB
QBB, hard
QBB, soft
Rack cabinet
Remote I/O riser
module
Remote testing
Glossary-4
Cabinet in the GS160/320 systems that provides power
for the system cabinets and houses PCI boxes and
storage shelves.
Power is supplied to the entire system box through the
QBB at the rear of the cabinet. Vaux and 48 volt input
and return are supplied.
See PSM.
The PCI master box whose system control manager
(SCM) controls the system. See also Secondary PCI
box.
Power system manager; a module in each QBB that
monitors CPUs, voltages, temperatures, and fan speeds
in the QBB and then reports this information to the
system control manager (SCM). The SCM can make
requests of the power system manager.
Quad building block; the basic building block of the
system. The QBB backplane provides a crossbar switch
and connectors for one to four processor modules, one to
four memory modules, power converters, a power
system manager, a memory directory module, a clock
splitter module, a global port, and I/O ports.
Number that indicates the physical location of a QBB in
a system.
Number that indicates a QBB as reported by the
firmware.
The GS80 cabinet configured as a complete system that
holds up to two system drawers, each of which has one
QBB.
The I/O riser module that is in the PCI box.
Testing run by the system primary CPU on a QBB
other than the QBB in which it resides.