Whenever I save or update a file to a particular designated folder on my C:\drive I would like to make or update a copy on my network-attached storage device, ideally saving the copy to the NAS as a version rather than overwriting a copy there, if possible.

I have Windows 7 x64 Ultimate. Is there any feature built-in that can accomplish this? It has to be a real copy, not merely a pointer. I'm trying to achieve some redundancy for especially critical documents (in a variety of formats) that change frequently throughout the day.

P.S. I am looking for folder-level granularity; I wouldn't want this to happen for every file on the C: volume.

EDIT: The main recommendations for Windows that were offered in answers to the question cited as the reason for closing this one as a duplicate, do not work in real-time. I've downloaded Yardis and although it's been set up to recognize changes real-time, it does not do so. Same problem with DSynchronize, whose documentation indicates that this feature is "experimental".

So if we could re-open this question, that would be good.

Whenever I save or update a file to a particular designated folder on my C:\drive I would like to make or update a copy on my network-attached storage device, ideally saving the copy to the NAS as a version rather than overwriting a copy there, if possible.

I have Windows 7 x64 Ultimate. Is there any feature built-in that can accomplish this? It has to be a real copy, not merely a pointer. I'm trying to achieve some redundancy for especially critical documents (in a variety of formats) that change frequently throughout the day.

P.S. I am looking for folder-level granularity; I wouldn't want this to happen for every file on the C: volume.