1.    21 Jul 2016 #1
    Join Date : Jul 2016
    Posts : 3
    Windows 10

    Storage Space - Parity ( RAID5) - Lost data on creation


    Hello...this is confusing.


    I installed Windows 10, upgrading from Windows 7. It went fine. Nothing of note in Windows.old.
    I wanted to utilise W10 Storage Pool RAID 5 Parity option for data security.
    I backed up the static data from my 3 x 1.5 TB disks onto a large internal drive.
    I checked the windows copy with both synctoy and freefilesync for completeness and zero errors\omissions. Twice. All was OK.

    I built the RAID 5 - Parity set some 2.75Gb with the old 3 x 1.5TB drives. I transferred the data (c.1.8TB) back across, from the internal drive to populate the RAID 5 set (painfully slow). Again I checked for completeness with synctoy & freefilesync. No apparent errors.

    PROBLEM

    The folder M reports 913Gb of data in 1782 folders with 4171 files.
    This folder is identical on the original source backup internal drive and the Storage Pool.

    However when I look at the individual subfolders within M I can only locate some 151 folders with 831 files totalling c.280Gb. All the other folders are empty. Or are reporting empty. Over 600Gb of data is reported, by size & file numbers at the top level but is not in the folders (apparently).

    I have run chkdsk /f on the Storage Pool and the Internal Backup disk. No errors.
    I have run SFC /SCANNOW . Some Windows Resource Protection errors but no trace of missing files.

    Is this that these files are hidden ? Has WIndows 10 altered all my file attributes ?
    Am I missing an obvious trick ?
    Did the folder structure copy across but omitted to copy the file content ?
    Why did synctoy & freefilesync not pick this up ?
    Why does the folder M report files/folders/size that is inconsistent with what I can locate ?

    Confused. Looks like a Quantum RAID 5.
    The very act of its creation destroys the data it was set up to secure.

    Any bright ideas welcome. Thanks for reading.

    mydogmuppet.
      My ComputerSystem Spec
  2.    21 Jul 2016 #2
    Join Date : Jul 2016
    Crewe Cheshire
    Posts : 1,381
    windows 10

    Welcome to the forum win10 comes with robocopy and there is a free gui to make it simpliar Utility Spotlight: Robocopy GUI

    run that as mirror and see if it copies any files its a ms product built for servers and very fast the actual size of data may vary due to cluster sizes
      My ComputerSystem Spec
  3.    22 Jul 2016 #3
    Join Date : Jul 2016
    Posts : 3
    Windows 10
    Thread Starter

    Quote Originally Posted by Samuria View Post
    Welcome to the forum win10 comes with robocopy and there is a free gui to make it simpliar Utility Spotlight: Robocopy GUI

    run that as mirror and see if it copies any files its a ms product built for servers and very fast the actual size of data may vary due to cluster sizes

    Thanks. I'll try this but having slept on the problem.....

    I'm now of the opinion its nothing to do with my upgrade...or Storage Space creation.
    It's likely to be idiot USER error.

    That'd be me.
      My ComputerSystem Spec

 


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