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Microsoft KB Archive/105544

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Knowledge Base

EISA Controllers May Cause Media Errors on ST2000 DATs

Article ID: 105544

Article Last Modified on 11/1/2006


  • Microsoft Windows NT Advanced Server 3.1
  • Microsoft Windows NT Workstation 3.1
  • Microsoft Windows NT Advanced Server 3.1

This article was previously published under Q105544


Some EISA controllers may cause erroneous media errors on the Conner ST2000 DAT. Attempts to back up and verify the tape will fail and you will receive the following error message:

Fatal Error on Drive 1

On the rare occasions that the back up and verify process does not fail, there will be several errors in the backup log. A large number of the files will be corrupt when restored.

This problem occurs with all of Conner's 2 gigabyte (GB) tape drives. It is not operating system-specific. A firmware upgrade to version 2.66 or later corrects this problem.


You can obtain the firmware version for the ST2000 DAT from within Windows NT in the following path of the Registry:

WARNING: Using Registry Editor incorrectly can cause serious, system-wide problems that may require you to reinstall Windows NT to correct them. Microsoft cannot guarantee that any problems resulting from the use of Registry Editor can be solved. Use this tool at your own risk.

   HKEY_LOCAL_MACHINE\Hardware\Devicemap\Scsi\Scsi Port 0\Scis Bus 0\ 
   Target Id #\Logical Unit Id #

   Value 0
    Name: DeviceName
    Type: REG_SZ
    Data: Tape0

   Value 1
    Name: Identifier
    Type: REG_SZ
    Data: ARCHIVE Python 2.5

Archive ST2000 DATs with firmware version 2.66 began shipping from Conner in August 1993. Firmware upgrades are available through Conner Technical Support at (800) 227-6296. Conner is currently shipping version 2.96.

The 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 archive

Keywords: kbhardware KB105544