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    Hello-

    I put a trial version of WHS on an old desktop.  I've successfully backed up a hard wired vista premium machine several times.  My wireless Vista Ultimate laptop has been giving me an error and has never completed.  I'm at work and don't have the exact phrasing, but the error said something like "backup failed due to windows home server connector problem."  It suggested looking at the system log.  I found the error in my log and it said something about a device I/O error.  I can cut and paste the exact text in after work if it would be helpful, just let me know.

    The problem machine has two partitions.  One is an OEM restore partition and the other is my work area.  If I try to backup both volumes, the backup errors at 3% (checking changed clusters).  If I try to backup just my work partition, it errors at 6% (checking changed clusters).  I've run chkdsk /r on the work partition.

    Any ideas?  Would any other information help?  Should I try to reinstall WHS connector?

    Thanks!
    Monday, April 27, 2009 4:22 PM

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    The request could not be performed because of an I/O device error.
    ...
    This may point to a hardware (probably disk) error. You might want to run chkdsk /r on that drive...
    I'm not on the WHS team, I just post a lot. :)
    Tuesday, April 28, 2009 2:52 PM
    Moderator

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    Hello-

    I put a trial version of WHS on an old desktop.  I've successfully backed up a hard wired vista premium machine several times.  My wireless Vista Ultimate laptop has been giving me an error and has never completed.  I'm at work and don't have the exact phrasing, but the error said something like "backup failed due to windows home server connector problem."  It suggested looking at the system log.  I found the error in my log and it said something about a device I/O error.  I can cut and paste the exact text in after work if it would be helpful, just let me know.

    The problem machine has two partitions.  One is an OEM restore partition and the other is my work area.  If I try to backup both volumes, the backup errors at 3% (checking changed clusters).  If I try to backup just my work partition, it errors at 6% (checking changed clusters).  I've run chkdsk /r on the work partition.

    Any ideas?  Would any other information help?  Should I try to reinstall WHS connector?

    Thanks!

    Before doing much more troubleshooting in the event log, verify that the backup fails on a wired connection.  While you can backup over wireless this really depends on your wireless NIC drivers/hardware and your network config. Also, subsequent backups after the initial backup will be smaller so backing up over wireless after the first backup might be more successful.

    My old laptop was 50/50 in regards to the first backup on wireless as the wireless card was not so great and I tended to leave it in a place with terrible reception at night. My new laptop has no problems. Still, the first backup after a clean install of Windows 7 is long if I forget to do it via wired first.

    If your backup fails on a wired connection, then please post the errors from the log.

    Thanks!
    Lara Jones [MSFT] | Program Manager
    Community Support and Beta | Windows Home Server Team
    Windows Home Server Team Blog
    Connect Windows Home Server
    Windows Home Server
    Monday, April 27, 2009 8:25 PM
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    Thanks for your response Lara.  I've tried both ways wired/wireless.  I'll post the logs when I get to my house tonight.
    Monday, April 27, 2009 8:45 PM
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    I got home and tried to generate the error message again, but this time it didn't error!  I don't need more help now, but thought I'd post a little more info.  This may be helpful if the problem comes back or someone stumbles on this thread and wants more info.

    I can see in my "backup details" that I had nine failures before this success.  Each failure happened at 0 sec into the process and had the following alarm info:

    An unexpected exception occurred on the computer.
    COMException
    The request could not be performed because of an I/O device error.
    (Exception from HRESULT:0x8007045D)
    at
    System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal/Int32errorCode IntPtr.errorInfo
    Tuesday, April 28, 2009 1:49 PM
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    ...
    The request could not be performed because of an I/O device error.
    ...
    This may point to a hardware (probably disk) error. You might want to run chkdsk /r on that drive...
    I'm not on the WHS team, I just post a lot. :)
    Tuesday, April 28, 2009 2:52 PM
    Moderator
  • Question
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    ...
    The request could not be performed because of an I/O device error.
    ...
    This may point to a hardware (probably disk) error. You might want to run chkdsk /r on that drive...
    I'm not on the WHS team, I just post a lot. :)

    I also recall one or more posts where this problem was fixed by running chkdsk more then once, can't find them right now.
    Tuesday, April 28, 2009 3:13 PM
    Moderator