TITLE
    Power Macintosh 9500 Series: Drive Setup Information (6/95)
Article ID:
Created:
Modified: 		17917
6/9/95
6/21/95
TOPIC



    This article contains information on how Logical Unit Numbers (LUNs) are used in the Drive Setup software included on Power Macintosh 9500 series computers.

DISCUSSION


    There are a number of columns on the setup window listing drive SCSI, BUS number, and one listing LUN .

    LUN (Logical Unit Number)
    =========================
    This column identifies the Logical Unit Number of the device on the bus. For SCSI this could range from 0 - 16. This column is undefined for IDE since IDE does not implement LUNs.

    In SCSI each target ID may have 8 logical units which are LUNs. The range of SCSI target ids is 0-7 for all SCSI busses implemented in Macintosh hardware today. If a user has a third-party SCSI card installed which implements 'Wide SCSI' then the target ID range can be from 0 to 16.


    Article Change History:
    21 Jun 1995 - Reworded for clarification
    20 Jun 1995 - Corrected minor typo.

    Support Information Services

Document Information
Product Area: Computers
Category: Power Macintosh
Sub Category: Power Macintosh 9500
Keywords: kppc,kpci

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