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THR-22 - 2TB drive that actually works

Discussion in 'DirecTV TiVo Powered PVRs & Receivers' started by Sheffield Steve, Sep 2, 2012.

  1. Sheffield Steve

    Sheffield Steve Member

    74
    0
    Jun 11, 2010
    OK, so I decided to update from my series 2 to the new THR-22 and after a couple of weeks of use realized that the 500GB drive would not cut it and I needed to upgrade it.

    So I though I would use a video surveillance HD I had; the Seagate ST2000VX000.

    This upgrade resulted in the pixelation people have reported and slow menu response too. (Even after a couple of weeks of use)

    So then I tried the Seagate Pipeline HD (ST2000VM002), this had less of a problem but still did not work flawlessly like the original 500GB pipeline drive.

    So I did a bit of research and decided to try the Hitachi Deskstar (H3D20006472S) as it was a highly rated 7200 rpm drive, used older, none-AF technology and a 6Gb/s interface. (Although our Tivo's can only use the 3Gb/s mode, I knew the drive itself have to be fast to be able to feed the 6Gb interface)

    This drive worked flawlessly from the moment I installed it. No waiting for it to settle down and menu response was fast too. The drive is a available for around $100.

    I also ran some test on the drives and here are the results using tests by Spinrite:

    Burst Transfer Rate
    Hitachi H3D20006472S = 88,896,060
    Seagate ST2000VX000 = 64,984,160
    Seagate ST2000VM002 = 51,225,989

    Sustained Transfer rate
    Hitachi H3D20006472S = 124,624,287
    Seagate ST2000VX000 = 117,498,617
    Seagate ST2000VM002 = 109,157,670

    Random Sector Access
    Hitachi H3D20006472S = 12.263
    Seagate ST2000VX000 = 9.189
    Seagate ST2000VM002 = 13.703

    I tried testing the original 500GB drive but for some reason Sprinrite would not recognize it. (I wonder if it is modified in some way?)
     
  2. unitron

    unitron Active Member

    16,387
    2
    Apr 28, 2006
    semi-coastal NC

    What software did you use to copy and expand?
     
  3. Sheffield Steve

    Sheffield Steve Member

    74
    0
    Jun 11, 2010
    ddrescue

    Sorry, I can't post a link - not enough posts.


     
  4. unitron

    unitron Active Member

    16,387
    2
    Apr 28, 2006
    semi-coastal NC
    ddrescue

    just like

    dd_rescue

    and their predecessor, the venerable and still deadly if you make a keyboard mistake

    dd

    will all copy, but none of them know how to expand a TiVo drive.


    Perhaps you used comer's

    jmfs

    which I believe uses

    ddrescue

    for the copying part of things, and then something comer wrote for the expanding by adding a partition part.
     
  5. Sheffield Steve

    Sheffield Steve Member

    74
    0
    Jun 11, 2010
    There were all 2TB drives so I didn't need to expand.

    I was going to try Ghost in forensic mode. Which should also work on drives on the same size
     
  6. unitron

    unitron Active Member

    16,387
    2
    Apr 28, 2006
    semi-coastal NC
    You can use jmfs to just copy.

    Although for trying to copy a failing drive I prefer

    dd_rescue

    so far.

    I did a little Googling to learn about Ghost forensic mode and it sounds like there's entirely too much chance of doing it wrong.
     
  7. Sheffield Steve

    Sheffield Steve Member

    74
    0
    Jun 11, 2010
    I have used Ghost for years. It's really simply and you can change the settings via a GUI. Or just run it with the Forensic switches -IR -FNF

    Having said that, when cloning disks you have to be careful for sure. I have seen people clone the disks the wrong way destroying all the data. It's better to clone to an image first. (If you have the space)
     

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