292 T10000: Interface Reference Manual August 2016
High Performance Parallel Interface
The NCITS standard that defines high-speed information transfer using dual simplex,
over a short parallel bus.
HIPPI
See High Performance Parallel Interface.
Host
A processor, usually composed of a CPU and memory, that typically communicates
with peripheral devices over channels and/or networks, to perform I/O operations
such as network control. It also provides end users with computation services and
database access.
host bus adapter (HBA)
A circuit installed in a multi-platform host or device that interfaces between the
device and the bus.
HSSDC
High speed serial data connectors. StorageTek tape drives use this type of connector
at the interface card.
Hub
A piece of hardware, separate from the actual FC interface accessible on the
backplane of a device, which houses the port bypass circuitry for configurations of 8
to 16 ports per hub. Hubs may be stacked to support larger configurations, and can
usually support a mix of both electrical and optical media ports in the same hub.
I
IEEE 802.1au Congestion management
The IEEE 802.1au Congestion management is the second key component required to
enable a converged Ethernet fabric.
Idle
A special type of fill word sent from a transmitting port to a receiving port that
contains no data or control information, but communicates that the transmitting port
has more frames to send. The idle word is necessary because FC needs a continuous
flow of transmissions and receptions to remain operational.
ILI
Illegal length indicator.
Inbound Fiber
The fiber in a link that carries information into a receiving port.
Information Unit
A unit of information defined by FC-4 mapping transferred as sequences.
Intelligent Peripheral Interface
The NCITS standard used in host computers to control peripheral devices at a speed
of up to 100 MB/s. In its FC implementation, IPI remains half-duplex within I/O
operations.
Internet Protocol
A stacked set of protocols, developed by the U.S. Department of Defense, to facilitate
communication between dissimilar computers over networks.
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