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Forum Discussion
Full backup only copies partial file set
I've just noticed, though no reason to suspect that the situation has changed, that a 'Full' backup of one of my shares to the ReadyNas backup share only does a partial copy. Tried reconfiguring the ...
Using the ip & credentials seems to be working. What is the difference between Windows (archive bit) & Windows (Timestamp)?
Cheers
When doing an incremental backup, Windows (timestamp) uses the modification date on a file to determine if it has changed. The backup job reads the source files (and metadata) but does not modify the source in any way.
Windows (Archive) backs up a file if the archive bit is set on the source - and when the file is copied, it clears that archive bit. Note the OS doesn't clear the archive bit on its own, the NAS needs to have permissiion to modify the attribute bits.
Generally speaking the timestamp method is more robust. For instance if you were making two incremental backups of the same source (to different destinations), then with Archive backups the first backup would clear all the archive bits - so the second backup would therefore not back up anything.
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