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How does one determine what was lost in a disc failure? RRS feed

  • Question

  • Today one of my discs had a head crash and was totally inoperable, so I took it out. It was an ancient 300GB IDE and I don't know how full it was at the time. My duplication settings don't cover much stuff, just photos that I can't get hold of again, so I assume I have lost some data during this episode. I knew this would happen if a disc failed and I'm fine with that since most of the stuff I can get hold of again.

    My question is: how can I find out what I lost? At a cursory glance over my shared folders nothing stands out. I did read this thread: http://social.microsoft.com/Forums/en-US/whssoftware/thread/58a871d2-2852-492a-8b0f-2f8d30f73d9b - however the add-in recommended within does not seem to have anything to do with being able to tell me what files I lost, though I did install it and had a poke around.

    So:

    1. Is there some way I can get a report of what was lost in the failure? I assume the OS keeps track of what's kept where, so as long as the OS disc didn't fail this information should be available?

    2. If not, how will lost data appear? Will it just not be there? Will it appear to be there until I try and access it, whereupon it will show up as inaccessible?

    Thanks.
    Sunday, November 22, 2009 5:23 PM

Answers

  • Today one of my discs had a head crash and was totally inoperable, so I took it out. It was an ancient 300GB IDE and I don't know how full it was at the time. My duplication settings don't cover much stuff, just photos that I can't get hold of again, so I assume I have lost some data during this episode. I knew this would happen if a disc failed and I'm fine with that since most of the stuff I can get hold of again.

    My question is: how can I find out what I lost? At a cursory glance over my shared folders nothing stands out. I did read this thread: http://social.microsoft.com/Forums/en-US/whssoftware/thread/58a871d2-2852-492a-8b0f-2f8d30f73d9b - however the add-in recommended within does not seem to have anything to do with being able to tell me what files I lost, though I did install it and had a poke around.

    So:

    1. Is there some way I can get a report of what was lost in the failure? I assume the OS keeps track of what's kept where, so as long as the OS disc didn't fail this information should be available?

    If you haven't removed the failed drive from the Console, you should get a whole bunch of File Conflict errors (one for each file missing).  You could use that as a guide.  Or you could use the WHS Cleanup Tool.  It's unsupported, but it creates a list of broken tombstones that you can use to identify your missing files.

    2. If not, how will lost data appear? Will it just not be there? Will it appear to be there until I try and access it, whereupon it will show up as inaccessible?

    Thanks.
    If the drive has not been removed from the Console, you should get File Conflict error messages and if you try to open one of those, you will get an error message (because the tombstone is pointing to file that no longer exists).  If the drive has been removed from the Console, the broken tombstones should no longer be there.
    • Proposed as answer by kariya21Moderator Monday, November 23, 2009 6:18 AM
    • Marked as answer by Anjow Monday, November 23, 2009 11:41 AM
    • Unmarked as answer by Anjow Wednesday, November 25, 2009 11:17 AM
    • Marked as answer by Anjow Wednesday, November 25, 2009 4:43 PM
    Monday, November 23, 2009 6:18 AM
    Moderator

All replies

  • Today one of my discs had a head crash and was totally inoperable, so I took it out. It was an ancient 300GB IDE and I don't know how full it was at the time. My duplication settings don't cover much stuff, just photos that I can't get hold of again, so I assume I have lost some data during this episode. I knew this would happen if a disc failed and I'm fine with that since most of the stuff I can get hold of again.

    My question is: how can I find out what I lost? At a cursory glance over my shared folders nothing stands out. I did read this thread: http://social.microsoft.com/Forums/en-US/whssoftware/thread/58a871d2-2852-492a-8b0f-2f8d30f73d9b - however the add-in recommended within does not seem to have anything to do with being able to tell me what files I lost, though I did install it and had a poke around.

    So:

    1. Is there some way I can get a report of what was lost in the failure? I assume the OS keeps track of what's kept where, so as long as the OS disc didn't fail this information should be available?

    If you haven't removed the failed drive from the Console, you should get a whole bunch of File Conflict errors (one for each file missing).  You could use that as a guide.  Or you could use the WHS Cleanup Tool.  It's unsupported, but it creates a list of broken tombstones that you can use to identify your missing files.

    2. If not, how will lost data appear? Will it just not be there? Will it appear to be there until I try and access it, whereupon it will show up as inaccessible?

    Thanks.
    If the drive has not been removed from the Console, you should get File Conflict error messages and if you try to open one of those, you will get an error message (because the tombstone is pointing to file that no longer exists).  If the drive has been removed from the Console, the broken tombstones should no longer be there.
    • Proposed as answer by kariya21Moderator Monday, November 23, 2009 6:18 AM
    • Marked as answer by Anjow Monday, November 23, 2009 11:41 AM
    • Unmarked as answer by Anjow Wednesday, November 25, 2009 11:17 AM
    • Marked as answer by Anjow Wednesday, November 25, 2009 4:43 PM
    Monday, November 23, 2009 6:18 AM
    Moderator
  • Thanks - that WHS Cleanup Tool looks like exactly what I was after. I'll have a go with it and see what happens.
    Monday, November 23, 2009 9:38 AM
  • Okay, I ran that tool (it took 2 days to check everything...) and it hasn't shown me the parse problems, but it has shown me the empty directories. Which seems to be enough to see what's gone missing.

    HOWEVER, I've noticed that I have some empty directories in my photos share. This obviously means they were on the disc that failed, BUT I do have duplication for photos turned on. So since photos are supposedly duplicated, how can I get this data back? I thought the OS would realise they were missing and put them back itself...
    Wednesday, November 25, 2009 11:17 AM
  • The OS will not try to reduplicate files until you remove the failing drive.
    Wednesday, November 25, 2009 7:25 PM