High Performance Parallel Interface

What Does High Performance Parallel Interface Mean?

A high-performance parallel interface (HIPPI) is a type of communication bus used to attach different devices to local area networks (LAN) at high speed so that they function as if they are all part of a single supercomputer. HIPPI uses a point-to-point protocol for the transmission of large amounts of data at speeds of up to 1 billion bits per second over short distances. HIPPI was widely used in the late ’80s and ’90s, but has since been replaced with faster interface standards like SCSI and fiber channel.


Techopedia Explains High Performance Parallel Interface

The original HIPPI standard specified 800 Mbps data transfer rates over a 32-bit data bus, or double that on a 64-bit bus. It also specified the use of a cable with 50 twisted pair copper wires and a maximum distance limit of 25 meters. Full duplex is achieved by using two channels. Data is sent as bursts of 1,024 or 2,048 bytes in a unidirectional channel. One of the highlights of the HIPPI network is that it makes use of a switch allowing data to be forwarded with little processing involved. There is error detection, but the correction is done by a higher protocol level so that encapsulated HIPPI packets can be sent over ATM or fiber channel networks.


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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…