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Thread: NT4 Server, hp dat & nt backup = knightmare

  1. #1
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    • madman045's system
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    Question NT4 Server, hp dat & nt backup = knightmare

    Ive not had much luck in sorting this problem out, so im gonna ask you guys & see if you can come up with a solution.

    NT4 Server, SP6
    HP Dat 40 drive, SCSI
    Tekram DC-390U2WE card

    The scsi adapter detects the drive, the drive is detected in windows, installed the driver for the card & downloaded the driver for the tape drive.

    The tape drive is using the 4mm dat drivers

    I have used HPs Storageworks Library & Tape tools & the drive is fine according to the diagnostic checks.

    The server is being backed up using ntbackup.

    The scheduled job kicks in, ntbackup checks the files & then starts, after approx 3hrs into the process, it stops working, the tape drive is no longer responding, yet there is a green light on the drive.

    rebooting the server also does not resolve it, but when you reboot, the scsi card no longer detects the drive.

    The only way for the system to see the tape drive again is to power off the server completely.

    Anyone got any ideas??

    Thanks

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    That sounds strange :S

    How much data are you backing up and how big is the tape?

  3. #3
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    • madman045's system
      • Motherboard:
      • P9X79 Pro
      • CPU:
      • I7-3820
      • Memory:
      • 32GB
      • Storage:
      • Not enough!
      • Graphics card(s):
      • HD7970
      • PSU:
      • 850w Corsair
      • Case:
      • Corsair Carbide 300R
      • Operating System:
      • Win 7 Ultimate X64
      • Monitor(s):
      • Dell U2713HM & 2007WFP
      • Internet:
      • Plusnet FTTC - 30mbit/7mbit
    Quote Originally Posted by gamesaregood
    That sounds strange :S

    How much data are you backing up and how big is the tape?

    Backing up about 28gb, the tapes are 20/40 DDS4

    I really cant think of what can be causing it bar NT4 not handling the drive properly...

  4. #4
    Oh no!I've re-dorkalated! Jiff Lemon's Avatar
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    You tried backing up a smaller Data set?
    Has the drive ever worked?

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    Administrator Moby-Dick's Avatar
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    I'd go with data size - I've yet to see a "40Gb" tape actually take 40 GB of real data and not log files
    my Virtualisation Blog http://jfvi.co.uk Virtualisation Podcast http://vsoup.net

  6. #6
    Senior Member
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    • madman045's system
      • Motherboard:
      • P9X79 Pro
      • CPU:
      • I7-3820
      • Memory:
      • 32GB
      • Storage:
      • Not enough!
      • Graphics card(s):
      • HD7970
      • PSU:
      • 850w Corsair
      • Case:
      • Corsair Carbide 300R
      • Operating System:
      • Win 7 Ultimate X64
      • Monitor(s):
      • Dell U2713HM & 2007WFP
      • Internet:
      • Plusnet FTTC - 30mbit/7mbit
    Quote Originally Posted by Jiff Lemon
    You tried backing up a smaller Data set?
    Has the drive ever worked?
    I will try & backup something smaller 1st thing tomorrow morning.

    The drive is 2 weeks old & it has worked (well as far as event viewer goes)

    Does anyone know if you can reset the scsi bus without having to power it off, i.e software?

  7. #7
    daft ideas inc. scottyman's Avatar
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    I've had that problem with surestore units
    make sure you've cleaned the unit

    upgrade the firmware

    run a couple of small backups first (to make sure it keeps responding correctly)

    clean it again

    do the backup WITHOUT hardware and/or software compression

    turn on hardware compression - and run the same test.

    if it passes, you should be okay - but hardware compression on those drives always has been a bit flaky.

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