Installation guide

Glossary
G-5
I
I2C: Intra Integrated Circuit. The I2C (Inter-IC) bus is
a bi-directional two-wire serial bus that provides a
communication link between integrated circuits
(ICs).
The I2C bus supports 7-bit and 10-bit address
space devices and devices that operate under
different voltages.
IA64: is a 64-bit Intel processor Architecture based
on Explicitly Parallel Instruction Computing (EPIC).
The Itanium processor is the first in the Intel line of
IA-64 processors.
IB: Infini Band.
IC: Integrated Circuit. An electronic device that
contains miniaturized circuitry. See Chip.
ICH2: I/O Controller Hub 2, component that
contains the fundamental I/O interfaces required by
the system. Flash memory, Keyboard, USB and IDE
device interface.
ICH4: I/O Controller Hub 4.
ICMB: Intelligent Chassis Management Bus.
ID: A number which uniquely identifies a device on
a bus.
IDE: Integrated Drive Electronics. A type of hard
disk drive with the control circuitry located inside
the disk drive rather than on a drive controller card.
Identity: See Domain Identity.
IIS: Internet Information Server. A group of Internet
servers (including a Web or HTTP server and a FTP
server) with additional capabilities for Microsoft
Windows NT and Microsoft Windows (and later)
operating systems.
I/O: Input /Output. Describes any operation,
program, or device that transfers data to or from a
computer.
Interface: A connection between a computer and a
peripheral device enabling the exchange of data.
See Parallel Port and Serial Port.
Internal Disk Subsystem: Disk subsystem housed
inside the NovaScale Internal Peripheral Drawer
(IPD).
IOB: Input / Output Board. The IOB connects up to
11 PCI-X boards.
IOC: Input / Output Board Compact. The IOC
connects up to 6 PCI-X boards.
IOL: I/O Board Legacy. The IOL provides:
- I/O controller Hub
- USB ports
- 10/100/1000 Ethernet controller
- Video controller
- Serial / debug port
IOR: I/O Board Riser. The IOR provides:
- I/O controller Hub
- USB ports
- 10/100/1000 Ethernet controller
- Video controller
- Serial / debug port
IP: Internet Protocol. The protocol by which data is
sent from one computer to another via the Internet.
Each computer (known as a host) on the Internet
has at least one IP address that uniquely identifies it
from all other computers on the Internet.
IPD: Internal Peripheral Drawer. The IPD houses
legacy peripherals (DVD-Rom drive, USB port) and
SCSI system disks. See DIB and Chained DIBs.
IPF: Itanium Processor Family.
IPL: Initial Program Load. It defines the firmware
functional phases during the system initialization.
IPMB: Intelligent Platform Management Bus.
IPMI: Intelligent Platform Management Interface.
ISA: Industry Standard Architecture. An industry
standard for computers and circuit cards that
transfer 16 bits of data at a time.
J
Jumper: A small electrical connector used for
configuration on computer hardware.
K
KVM: Keyboard Video Monitor.
KVM switch: the Keyboard Video Monitor switch
allows the use of a single keyboard, monitor and
mouse for more than one module.
L
LAN: Local Area Network. A group of computers
linked together within a limited area to exchange
data.