Installation guide
Glossary-3
C
Capacity on Demand
(COD)
The COD feature allows you to configure spare processing resources on
your M4000/M5000/M8000/M9000 server in the form of one or more
COD CPUs which can be activated at a later date when additional
processing power is needed. The M3000 server does not support COD.
To access each COD CPU, you must purchase a COD hardware
activation permit. Under certain conditions, you can use COD resources
before purchasing COD permits for them. See the SPARC Enterprise
M4000/M5000/M8000/M9000 Servers Capacity on Demand (COD) User’s
Guide.
carrier A component used to mount PCI cards or link cards in the PCI box. The
carrier with link cards is also called the link carrier, and the one with PCI
cards is also called the PCI carrier. The function is similar to that of the PCI
cassette, but is not compatible.
CB See Circuit Breaker (CB).
CE See Correctable Error (CE).
Chassis Serial Number
(CSN)
A serial number used to identify a server. The chassis serial number is
printed on the label affixed to the front side and right side of the system
cabinet. This number is used for the service provider to associate hardware
error events and maintenance actions with the relevant server.
Circuit Breaker (CB) Used for the SPARC Enterprise M4000/M5000 servers. An external circuit
breaker (such as a power distribution board or power distribution box)
connecting to an AC cable. The CB is also called a site circuit breaker.
CLKU See Clock Control Unit (CLKU).
Clock Control Unit
(CLKU)
The unit for supplying clock signals to the CPU/memory board unit and
crossbar unit. The CLKU is mounted only on the SPARC Enterprise M9000
server.
CMU See CPU/Memory Board Unit (CMU).
CMU Channel
(CMU-CH)
The bridge that connects system control devices to the system bus. The CMU
channel is mounted on the CMU. SPARC Enterprise M8000/M9000 servers
implement the functions for slave operation only, such as SCF interface boot
PROM, TTY, and I/O Interrupt.
CMU-CH See CMU Channel (CMU-CH).
COD See Capacity on Demand (COD).