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windows 2003 server SP2 DAT72 tape drive disappearing

Posted on 2010-09-24
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Last Modified: 2012-05-10
I have a windows 2003 server SP2 using ntbackup as my backup program. I have a SCSI DAT72 tape drive that has been working faultlessly. Over the past few weeks the device has been disappearing from device manager and only re appears after a reboot. The tape usually shows up in removable storage libraries with a red cross on it before it disappears from device manager. Just in case the SCSI or the device was faulty I replaced the device with a new SATA DAT72 tape device, now exactly the same thing is happening with the new device. The RSM databases have also been rebuilt. I have also ruled out any power issues as a new PSU has been fitted to the server. In both cases the recommended manufacturer’s driver has been installed and worked well whilst the devise was showing. Has anyone got any ideas as this is starting to cause me concerns at work.  
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Question by:netwizz123
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by:Brum07
ID: 33751873
Can you or did you replace the SCSI card? Also replace the cables as I have has this issue with failing cables.

Regards
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by:netwizz123
ID: 33751886
Thank you for a prompt posting,
All cables were replaced and I also swapped from SCSI to SATA and I still have the same issue.

Thanks
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by:goyal_251
ID: 33752056
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by:netwizz123
ID: 33752302
Thank you for your input,
I have seen this and also looked at Microsoft article KB 842411
Unfortunately having tried this there is no change for the better. When the TUR request is disabled for the HP device the device is not showing in device manager after a re boot.
 Thanks again
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Author Comment

by:netwizz123
ID: 33797862
After testing on a virtual mock up of the setup with a clean install of Windows server 2003 fully updated the system showed the same problems. When the system time was reverted to 2009 there were no problems with detecting the hardware or using it in a backup schedule. Has anyone got any ideas as to the possibility of a year 2000 type problem with removable storage manager or something like.
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netwizz123 earned 0 total points
ID: 33849763
Just time for an update.
I have solved the problem for now; I have discovered that the SCSI card was allowing the plug and play in windows to scan the devices on the card. As Microsoft have changed the operation of tape drives from Removable Storage Manager to plug and play this was causing the device to disappear from device manager, The tape drive was not plug and play compliant. I have installed a SCSI card that does not support plug and plat scanning, this now allows the device to be seen by device manager and not to be turned off by the disaster that is plug and play. The new card has been installed for 1 week now and is working faultlessly.
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