Wednesday, January 09, 2008

Windows Server Tape Drive Replacement Headaches

So your tape drive has failed, it gets replaced with a similar model, but backups still fail? I've run into this several times, and finally found the info I need to set it right!

Assuming it's a similar model, everything should be OK, right? Well, the RSM (Removable Storage Media) does not agree. It still sees the old tape drive as being there; this would have been avoided if the installing tech (sometimes me, more often a Dell rep) would have shut down the server, removed the failed tape drive, then instead of immediately installing the new one instead fires the server back up and lets it realize for itself that there is no drive. THEN you turn it back off, install the replacement drive, turn it back on, and presto! It works!

So you didn't do this, and Ntbackup doesn't recognize the new tape drive (even if it says the right thing, that right thing is likely the OLD tape drive!), don't worry! Let's begin:

  1. Go to your server's command prompt and enter:
  2. Note that the tape drive listed likely doesn't match the one you'll see in your Hardware Manager - go on and look for yourself, because if this isn't the case, then the rest of this likely won't help!
  3. Rebuild your RSM database:
    A. Stop the RSM Service.
    B. Backup the RSM databases located at %SystemRoot%\System32\NtmsData and
    delete the contents of ntmsdata folder.
    C. Restart the RSM Service and reboot the server. This will recreate new,
    empty RSM Databases.
    D. Put a new tape in, or a tape that may be deleted.
    E. Go to the "properties" of the disk inside the physical locations. Uncheck
    'Enable Drive'
    Hit apply & then check the 'Enable Drive' again
    (This was done to reset the Flag since we had renamed the database for RSM)
  4. Go to your server's command prompt and enter:
    This should prove that your newly installed tape drive is indeed recognized by the RSM. If it isn't, then you likely have other issues like improper drivers.

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