KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q148492: SCSI ID Configuration with Future Domain Controllers

Article: Q148492
Product(s): Microsoft Windows NT
Version(s): 3.5 3.51
Operating System(s): 
Keyword(s): 
Last Modified: 08-AUG-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Windows NT Workstation versions 3.5, 3.51 
- Microsoft Windows NT Server versions 3.5, 3.51 
-------------------------------------------------------------------------------

SUMMARY
=======

The SCSI ID configuration for Future Domain SCSI controllers is the reverse of
the industry standard. The reversal of the SCSI ID is for performance and/or
priority reasons on the SCSI BUS.

The Future Domain SCSI adapters use the highest SCSI ID for the boot drive, this
is normally ID 6. When adding new SCSI device it will be important to configure
the device with a lower SCSI ID then the current boot device.

The following information from the Future Domain Installation Instructions
discusses the reasoning behind the reverse ID scheme:

  Devices with higher SCSI IDs receive priority from your computer over devices
  with lower IDs. The controller uses SCSI ID 7, so it is given the highest
  priority by your computer. You may assign higher IDs to your most often used
  and fastest devices.

  For example, our main SCSI hard drive should be assigned SCSI ID 6 so that it
  will receive priority over other SCSI devices.

  Note: If you have more than one SCSI hard drive, the drive with the highest ID
  will always be the boot drive.

MORE INFORMATION
================

Consult the Future Domain Instructions manual that was provided with your Future
Domain product.

The Future Domain SCSI products included here are manufactured by vendors
independent of Microsoft; we make no warranty, implied or otherwise, regarding
these products' performance or reliability.

Additional query words: prodnt 3.5
======================================================================
Keywords          :  
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNT351search kbWinNT350search kbWinNTW350 kbWinNTW350search kbWinNTW351search kbWinNTW351 kbWinNTSsearch kbWinNTS351 kbWinNTS350 kbWinNTS351search kbWinNTS350search
Version           : 3.5 3.51

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.