Hi,

I know this is a bad place to ask about a third party purchased product. But i know its OS is *nix based, whilst i dont know what the FS is.

I am trying to use one of these Tera-byte NAS (Maxtor) as a simple dump-bucket of a backup which i want to re-sync everyday with date changes. It works, but it wont discriminate with dates. Therefore im doing full backups every night - which are still running during the next morning.

Is this a problem with ALL NTFS to *nix FileSystems? I have googled alot and i read about time values - either 2 seconds or 0.1. I dont get it.

Could anyone let me know if this is a known problem?

thanks alot.

If your NAS supports rsync you could use that. It will do incremental backups. Here is a link of how to do this in Windows.

http://www.gaztronics.net/rsync.php

I dont think it does unfortunatley, also that link is broken. Thanks anyway mate.

Hey everyone,

Just to resolve my problem.

My reading lead me to the fact that NTFS uses 100 nansecond time resolution for time stamping, and FAT uses 2 second resolution. Therefore if your file was modified in NTFS at 07:00:00.23 and copied to a FAT FS the timestamp on the destinatino would read 07:00:02.00.

Which successfully renders date discrimination useless when trying to re-sync from ntfs to fat FS's. Work around is to either allow for a tolerance in the copying program for seconds IE if destination timestamp > 2sec diff then copy. (which i cant figure out how to do) or throw out your timestamps and force a re-set to an arbitrary time with .00 seconds, and this will now work as perfect, whilst at the same time NEGATING THE WHOLE REASON WHY YOU WANTED DATE DISCRIMINATION.

Sucks to be me, but thanks for the help anyways.

Adding --modify-window=1 as option to rsync worked for me to circumvent the difference in timestamp.

Cheers, Leon.