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The network connection between the computer and server was lost back up failed RRS feed

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    The network connection between the computer and server was lost  is what the whs viewer tells me >
    My System is XP pro fully up to date.
    I have 3 other xp pro box's working fine, all have the same mother board as the server.
    My XP event logs show
    Event Type:    Error
    Event Source:    HomeServer
    Event Category:    HomeBackup
    Event ID:    770
    Date:        11/22/2009
    Time:        11:23:21 PM
    User:        N/A
    Computer:    CBEXPRESS1
    Description:
    Backup set 5 on CBEXPRESS-HOME failed: System.IO.FileNotFoundException: The system cannot find the file specified. (Exception from HRESULT: 0x80070002)
       at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
       at Microsoft.HomeServer.Common.Client.Win32.ThrowLastError()
       at Microsoft.HomeServer.Backup.NTFS.VolumeBuffer.EndRead()
       at Microsoft.HomeServer.Backup.NTFS.ClusterRangeReader.Dispose()
       at Microsoft.HomeServer.Backup.BackupOp.BackupOperation.DoClusterPass2()
       at Microsoft.HomeServer.Backup.BackupOp.BackupOperation.RunWithoutCatch()
       at Microsoft.HomeServer.Backup.BackupOp.BackupOperation.Run()
       at Microsoft.HomeServer.Backup.BackupOp.BackupSetOperation.RunWithoutCatch()
       at Microsoft.HomeServer.Backup.BackupOp.BackupSetOperation.Run()

    For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
    and
    Event Type:    Error
    Event Source:    HomeServer
    Event Category:    HomeBackup
    Event ID:    773
    Date:        11/22/2009
    Time:        11:23:21 PM
    User:        N/A
    Computer:    CBEXPRESS1
    Description:
    Backup of volume G: to CBEXPRESS-HOME failed: System.IO.FileNotFoundException: The system cannot find the file specified. (Exception from HRESULT: 0x80070002)
       at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
       at Microsoft.HomeServer.Common.Client.Win32.ThrowLastError()
       at Microsoft.HomeServer.Backup.NTFS.VolumeBuffer.EndRead()
       at Microsoft.HomeServer.Backup.NTFS.ClusterRangeReader.Dispose()
       at Microsoft.HomeServer.Backup.BackupOp.BackupOperation.DoClusterPass2()
       at Microsoft.HomeServer.Backup.BackupOp.BackupOperation.RunWithoutCatch()
       at Microsoft.HomeServer.Backup.BackupOp.BackupOperation.Run()

    For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

    In the system logs on my XP machine
    Event Type:    Error
    Event Source:    VolSnap
    Event Category:    None
    Event ID:    14
    Date:        11/22/2009
    Time:        11:23:21 PM
    User:        N/A
    Computer:    CBEXPRESS1
    Description:
    The shadow copy of volume G: was aborted because of an IO failure.

    For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
    Data:
    0000: 00 00 00 00 02 00 58 00   ......X.
    0008: 00 00 00 00 0e 00 06 c0   .......À
    0010: 02 00 00 00 9c 00 00 c0   ....œ..À
    0018: 00 00 00 00 00 00 00 00   ........
    0020: 00 00 00 00 00 00 00 00   ........

    and
    Event Type:    Error
    Event Source:    Disk
    Event Category:    None
    Event ID:    7
    Date:        11/22/2009
    Time:        11:23:21 PM
    User:        N/A
    Computer:    CBEXPRESS1
    Description:
    The device, \Device\Harddisk0\D, has a bad block.

    For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
    Data:
    0000: 03 00 68 00 01 00 b6 00   ..h...¶.
    0008: 00 00 00 00 07 00 04 c0   .......À
    0010: 00 01 00 00 9c 00 00 c0   ....œ..À
    0018: 00 00 00 00 00 00 00 00   ........
    0020: 00 fe 5d be 00 00 00 00   .þ]¾....
    0028: f9 00 30 00 00 00 00 00   ù.0.....
    0030: ff ff ff ff 00 00 00 00   ÿÿÿÿ....
    0038: 40 00 00 84 02 00 00 00   @..„....
    0040: 00 20 0a 12 40 03 20 00   . ..@. .
    0048: 00 00 00 00 0a 00 00 00   ........
    0050: 00 70 e1 83 a0 6b 3f 8a   .pრk?Š
    0058: 00 00 00 00 20 b3 74 87   .... ³t‡
    0060: 02 00 00 00 ff 2e 5f 00   ....ÿ._.
    0068: 28 00 00 5f 2e ff 00 00   (.._.ÿ..
    0070: 20 00 00 00 00 00 00 00    .......
    0078: f0 00 03 00 00 00 00 0b   ð.......
    0080: 00 00 00 00 00 00 00 00   ........
    0088: 00 00 00 00 00 00 00 00   ........

    I have run chkdsk /f/r at restart .
    I can not find a log entry about disk problems for the length of the log file since before I tried to backup.
    it's a 500 gb drive almost 1/2 full.

    Thanks for any help.
    Monday, November 23, 2009 11:01 AM

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    Alright I went too western digital's site and downloaded the Acronis WD copy tool  http://support.wdc.com/product/downloaddetail.asp 
    It cloned my drive to a 1 TB drive I had . And has booted just fine. According to the how too I'm running CHKDSK /f/r on the new drive as the copy process will also copy the marked bad blocks , this will notice them as healthy and mark them as good.
    Will find out tonight if the backup to the WHS works, And it did work just fine on the new drive.


    Allan
    • Marked as answer by Alan87i Thursday, November 26, 2009 10:44 AM
    Wednesday, November 25, 2009 9:11 PM

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    "The device, \Device\Harddisk0\D, has a bad block." is that log entry you could not find, I would say.
    Bad blocks may cause volume shadow copies to fail, and so the backup will also fail. All drives, which are earlier in the sequence, will be backed up successfully, the faulty drive not.
    I would recommend to delete the volume, which contains the faulty block (if necessary backup the data stored on it to a different location). This should map out the faulty block. After that recreate the volume and restore its formerly backed up contents either from the home server by executing ClientRestoreWizard.exe from C:\Program Files\Windows Home Server on this client or copying data back, which you saved manually.
    Also reconfigure backup in the console to include the new volume and no longer backup the old one.
    Keep an eye on the event log of the machine to see early, if new bad blocks appear - in this case change the disk.
    Best greetings from Germany
    Olaf
    Monday, November 23, 2009 11:11 AM
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    The bad block log file is from the events logs on the XP pro machine that won't backup. Harddisk 0 is the main drive with the installed OS on it.
    Monday, November 23, 2009 1:34 PM
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    If you have run chkdsk /r on that disk, then you should be able to find the reported results in the application event log, source "winlogon". If chkdsk indicates that it corrected errors, I would run it again to see if if finds any more errors to correct; I've observed that it doesn't always find/fix every issue on the first scan.
    I'm not on the WHS team, I just post a lot. :)
    Monday, November 23, 2009 3:09 PM
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    I have also seen, that even a marked bad block was enough to leave Volume Shadow Copies in a non functioning condition and therefore WHS Backup for that volume (and all subsequent volumes) fail.
    Best greetings from Germany
    Olaf
    Monday, November 23, 2009 3:38 PM
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    the log file for chkdsk says theres 56kb in bad sectors both times it ran.
    Allan
    Monday, November 23, 2009 7:56 PM
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    the log file for chkdsk says theres 56kb in bad sectors both times it ran.
    Allan
    It sounds like it isn't able to do anything with the bad sectors.  I would say the best course of action at this point is to replace the hard drive and restore your XP client from your most recent server backup.
    Tuesday, November 24, 2009 3:53 AM
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    I got the same error message as you, and after many searches for the error, founf out that there is a little bug which causes the network to not function properly in some cases.  I forget the exact issue (I believe it was something to do with dns and who is the browser master on the net), but the basic remedy FOR ME was to disconnect or power off the cable modem and all the other PCs temporarily from the network.  After doing this, reboot the Home Server, and the PC restored just fine.

    Since I can't remember the specifics, if you google for +WHS +"<your error text here>" , you can retrace my steps in finding the fix for the issue.

    I hope this helps.

    Regards

    Tuesday, November 24, 2009 5:59 PM
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    Or as already recommended, save the data, delete the volume, which contains the damaged sectors, create a new volume, copy the data back to it, reconfigure a backup and watch this disk specially carefull for new damaged blocks. If this happens, replace the drive as soon as possible.
    I had good success with that method in the past, as long as the disk issues where strictly limited and not growing.
    Best greetings from Germany
    Olaf
    Tuesday, November 24, 2009 7:52 PM
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    Alright I went too western digital's site and downloaded the Acronis WD copy tool  http://support.wdc.com/product/downloaddetail.asp 
    It cloned my drive to a 1 TB drive I had . And has booted just fine. According to the how too I'm running CHKDSK /f/r on the new drive as the copy process will also copy the marked bad blocks , this will notice them as healthy and mark them as good.
    Will find out tonight if the backup to the WHS works, And it did work just fine on the new drive.


    Allan
    • Marked as answer by Alan87i Thursday, November 26, 2009 10:44 AM
    Wednesday, November 25, 2009 9:11 PM