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Home » Dictionary » Storage

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Numeric

LUN
Author: Gabriel Torres Last Updated: December 22, 2005
Category: Storage

Logical Unit Number

LUN is an identification number used by SCSI devices. Each SCSI device needs to use a unique identification number when connected to a SCSI host. Numbers from 0 to 7 can be used with 8-bit SCSI hosts and numbers from 0 to 14 can be used when using a 16-bit SCSI host. The booting hard disk drive must use ID (LUN) 0. A second hard drive must use LUN 1 and so on. LUN configuration is done on the peripheral through a switch or jumper.

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