Glossary

hub

(1)In Fibre Channel protocol, a device that connects nodes into a logical loop by using a physical star topology. (2) In Ethernet, a device used to connect the HAFM server and the directors it manages.

hyperlink

A predefined link for jumping from one location to another, within the same computer or network site or even to a location at a completely different physical location. Commonly used on the world wide web for navigation, reference, and depth where published text will not suffice.

hypertext transport protocol

HTTP. A simple protocol that allows world wide web pages to be transferred quickly between web browsers and servers.

Hz

See Hertz.

I

ID

See identifier.

identifier

ID. (1) One or more characters used to identify or name a data element and possibly to indicate certain properties of that data element (D, T). (2) A sequence of bits or characters that identifies a program, device, or system to another program, device, or system. See also port name.

IEEE

See Institute of Electrical and Electronics Engineers.

IML

See initial machine load.

inband management

Management of the director or switch through Fibre Channel. An interface connection to a port card. Contrast with out-of-band management.

initial machine load

IML. Hardware reset for all installed control processor (CTP) cards on the director or switch. This reset does not affect other hardware. It is initiated by pushing the IML button on a director’s or switch’s operating panel.