Silicon Graphics Origin200, Owner'S Manual

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Glossary
249
module
An Origin200 chassis, CPU, and memory.
module system controller (MSC)
The board that contains logic to control low-level system functions, such as power-on,
power-off, and fan speed. Located behind the front panel, the Origin200 MSC also
contains the NIC that holds the system serial number.
mounting ear
An angled sheet-metal adapter used to attach a chassis to the rails of an equipment rack.
number in a can (NIC)
A device mounted on a circuit board that contains information such as the serial number
of the board and other information. In Origin200 systems, the NIC mounted on the
module system controller contains the system serial number.
node (node board)
A board that contains one or two R10000 processors and their caches, a section of the
global main memory, a crosstalk I/O port, and an inter-node routing network connection
(CrayLink Interconnect).
peripheral component interconnect (PCI)
A bus specification.
pound
A unit of weight. 16 ounces (about .64 kilograms). See also kilogram.
programmable read-only memory (PROM)
Memory that contains data, often configuration information and low-level programs,
that usually is not updated by the system. Certain types of PROMs can be updated, for
example, during software installation.
RAID
Redundant array of inexpensive disks.
random access memory (RAM)
Memory used for calculations and temporary storage. See also cache.