Consistency check fixing hundreds of items despite the fact everything should be consistent RRS feed

  • Question

  • DPM 2012 R2 on windows 2012 R2 server

    Three fileservers

    FS1 400GB 
    FS2 2TB
    FS3 2TB

    We joined the servers to the DPM on Saturday evening. It took around 7 hours to replicate. On Sunday evening everything was reporting ok, and no errors had been reported. A handful of users had been logging in and we could see some trivial file activity on the FS (word files etc)

    We even had a couple of restore points, and  just for fun we ran a consistency check. We had a similar set-up about three years ago, and CC used to take about an hour.

    (CC was run on all three servers at the same time) 

    FS1 took 25 mins to complete and transferred 500Mb of data and reported 89 items fixed out of 91593
    FS2 took 4 hours to complete and transferred 7.5Gb of data and reported 2259 items fixed out of 2205564
    FS3 took 5 hours to complete and transferred 7.2GB of data and reported  7520 items fixed out of 2315612

    I ran a CC this morning on FS1 and it was even worse. 190 items and 600MB of data

    My understanding is that while you might expect some activity the number and files and amount of data is completely at odds with doing a CC on a system that is reporting no errors and has been online for less than 24 hours. While there has been some activity it is nowhere near the number of files thayt have been "fixed".

    • Edited by Joe Darkman Monday, October 20, 2014 9:01 AM
    Monday, October 20, 2014 8:57 AM

All replies

  • Hi,

    Do you have any AV s/w that does a scan or a dedup scheduled that may be touching lots of files ?  DPM also tracks file metadata changes like last modified, last accessed, ntfs permission changes etc. It doesn't necessarily need to be file data that was tracked and transferred.  Also, amount of data transferred also includes agent communications for crc checks of files - so even if 0 files were fixed, you would still see data transferred numbers.

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    Thursday, October 23, 2014 3:49 AM