light emltting diode

A smaUlight emitting device used to provide status information.

Mbitdsec

Megabits per second (l,OOO,OOObits per second).

medium, media

The tmnsmission connection between nodes. Most current I&k use cables (fiberoptic or copper), although radio and other broadcast media are possible.

ODE

Off-lie Diagnostic EJnvironment. A distributed diagnostic execution environment launched from ISL.

SCSI

Small Computer System Interface, often pronounced “skuzzy”.

SCSI address

The binary representation of the unique address (0 to 15) assigned to each device and adapter on the SCSIbus. For bus arbitration the order of priority with highest first is: 7,6, 5,4,3,2,1,0, 15, 14, 13, 12, 11, 10,9,8. SCSIaddresses are typicahy assigned during installation. The SCSIadapter is typically assigned address “7”.

46 Glossary