Sun Microsystems Netra T4 AC100, Service And System Reference Manual

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Glossary 3
Network A configuration of data processing devices and software connected together for
information exchange.
NG-DIMM Next generation dual inline memory module
Node An addressable point on a network. Each node in a Sun network has a different
name. A node can connect a computing system, a terminal, or various other
peripheral devices to the network.
ns Nanosecond, 10
-9
seconds
NVRAM Nonvolatile random-access memory. A type of RAM that retains information
when power is removed from the system. In Sun systems, contains the system
hostID number and Ethernet address. In Netra T4 systems, this information is
stored on the system configuration card.
OBP OpenBoot PROM. A routine that tests the network controller, diskette drive
system, memory, cache, system clock, network monitoring, and control
registers.
PBM PCI bus module
PCI bus Peripheral component interconnect bus. A high-performance 32 or 64 bit-wide
bus with multiplexed address and data lines.
PCIO PCI-to-EBus/Ethernet controller. An ASIC that bridges the PCI bus to the
EBus, enabling communication between the PCI bus and all miscellaneous I/O
functions, as well as the connection to slower on-board functions.
PDB power distribution board
Peripheral assembly Removable media assembly. Can include a card reader, CD-ROM drive, DVD-
ROM drive, 4-mm tape drive, a diskette drive, and any other 3.5-inch device.
PID Process ID
POR Power on reset
POST Power on self-test. A series of tests that verify that system board components
are operating properly. Initialized at system power-on or when the system is
rebooted
PROM Programmable Read-Only Memory. A type of read-only memory (ROM) that
allows data to be written into the device with hardware device called a PROM
programmer. After the PROM has been programmed, it is dedicated to that
data and cannot be reprogrammed.
PSU power supply unit
QFE Quad fast Ethernet
RAID Redundant array of inexpensive disks
RMM Removeable media module