4Compaq StorageWorks 64-Bit PCI-To-Fibre Channel Host Bus Adapter User Guide

Lightwaves Electromagnetic waves in the region of optical frequencies. The time “ light” was originally restricted to radiation visible to the human eye, with wavelengths between 400 and 700 nanometers (nm). However, it has become customary to refer to radiation in the spectral regions adjacent to visible light (in the near infrared from 700 to about 2000 nm) as “ light” to emphasize the physical and technical characteristics.

Link A fiber optic cable with connectors attached to a transmitter (source) and receiver (detector).

Longwave Refers to length of the wave or frequency in the spectrum of light. 780 nm is the operating range of short wave lasers, while 1300 nm describes the range of long wave lasers.

LUN Logical Unit Number. A three-bit identifier for a Logical Unit. The maximum number of LUNs per SCSI target is 8, numbered LUN0 through LUN7.

Mb/s Megabits per second or 1,000 bits per second. A reference to processing speed.

MB/s Megabytes per second or 1,000 bytes per second. A reference to processing speed.

Media Manager (MM) A database built into NetWare that keeps track of all peripheral storage devices and media attached to NetWare servers, and allows applications to gain access and get information. The Media Manager receives application I/O requests and converts them to messages compatible with the NPA architecture.

MIA Media Interface Adapter. This device allows a conversion from fiber optic cable to copper media.

Micron (mm) Another term for micrometer. One millionth of a meter. 10-6meter.

Mode A term used to describe a light path through a fiber, as in multi-mode or single-mode.

Multi-initiatorsTwo different fibre channel HBAs in one arbitrated loop sharing the same storage devices, but not communicating with each other.

Multi-Mode Fiber An optical waveguide in which light travels in multiple modes. Typical core/cladding sized (measured in microns) are 50/125, 62.5/125, and 100/140.

Multiplexing The process by which two or more signals are transmitted over a single communications channel.

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Compaq LP8000-F1 manual