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Backup error, file "didn't compare"?


henrikberglund

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Hi,

 

When trying my first backup with the wd mybook and retrospect expess, several thousand files seems to have been backed up ok, but during the check phase the sw reports one error, "108_0883.JPG": didn't compare". What does this mean? How can I troubleshoot/fix this? I already tried plugging the usb directly in the computer instead of using a hub. I also tried copying and renaming the problem file. When running again the problem seems to be the same. (Except that log now reports two errors:

 

File "D:\photos\2003\2003_07_28_sunne\108_0883.JPG": didn't compare

File "D:\photos\wd1 ntfs\2003\2003_07_28_sunne\108_0883.JPG": didn't compare

 

(seems like retrospect created a file tree here right in the middle of my data?)

 

 

-------- complete log insert from try 1 below

 

- 2007-01-31 08:59:05: Copying mp3 on Local Disk (D:)

2007-01-31 09:39:05: Snapshot stored, 2 348 KB

2007-01-31 09:39:06: Comparing mp3 on Local Disk (D:)

2007-01-31 10:10:04: Execution completed successfully

Completed: 10099 files, 41,1 GB

Performance: 1197,4 MB/minute (1067,9 copy, 1363,4 compare)

Duration: 01:10:58 (00:00:44 idle/loading/preparing)

 

 

- 2007-01-31 10:10:04: Copying photos on Local Disk (D:)

2007-01-31 10:22:23: Snapshot stored, 1 509 KB

2007-01-31 10:22:24: Comparing photos on Local Disk (D:)

File "D:\photos\2003\2003_07_28_sunne\108_0883.JPG": didn't compare

2007-01-31 10:31:32: 1 execution errors

Completed: 9005 files, 12,5 GB

Performance: 1197,0 MB/minute (1046,8 copy, 1400,2 compare)

Duration: 00:21:28 (00:00:13 idle/loading/preparing)

 

------- end complete log insert

 

-------- insert from try 2 below

 

+ Executing My Scheduled Script at 2007-01-31 13:44

To Backup Set wd1 ntfs...

 

- 2007-01-31 13:44:58: Copying mp3 on Local Disk (D:)

2007-01-31 13:44:58: No files need to be copied

2007-01-31 13:45:16: Snapshot stored, 2 348 KB

2007-01-31 13:45:17: Comparing mp3 on Local Disk (D:)

2007-01-31 13:45:18: Execution completed successfully

Duration: 00:00:19 (00:00:18 idle/loading/preparing)

 

 

- 2007-01-31 13:45:18: Copying photos on Local Disk (D:)

2007-01-31 13:45:26: Snapshot stored, 1 509 KB

2007-01-31 13:45:27: Comparing photos on Local Disk (D:)

File "D:\photos\2003\2003_07_28_sunne\108_0883.JPG": didn't compare

File "D:\photos\wd1 ntfs\2003\2003_07_28_sunne\108_0883.JPG": didn't compare

2007-01-31 13:45:28: 2 execution errors

Completed: 2 files, 2 688 KB

Performance: 315,0 MB/minute (157,5 copy, 157,5 compare)

Duration: 00:00:09 (00:00:08 idle/loading/preparing)

 

2007-01-31 13:45:29: 2 execution errors

Total performance: 157,5 MB/minute

Total duration: 00:00:29 (00:00:27 idle/loading/preparing)

 

-------

 

Any help would be appreciated.

 

BR

 

Henrik

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  • 2 weeks later...
  • 1 month later...

I have the same issue, also with a couple of JPGs. Funny thing is, I had this problem once way back with version 5.6.

 

Until EMC fixes the problem:

- You can put your mind at ease that it's backing up the file properly by restoring it, and checking it against the original.

- You can avoid the error by changing verification from "Thorough" to "Media" (MD5).

 

Scott.

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