Move from site specific fileservers to a centralized fileserver

Hi,

I need some expert input on the following issue:

We would like to streamline our windows 2003 fileservers. We have offices in 3 different towns, interconnected via 10Mb MPLS.  Each office/site have their own fileserver with their own file hierarchy. Needless to say, it is a jungle to keep up with the access rights and backups...

Would we (in your opinion) benefit from an approach where we would have one NAS per site, and keep the information mirrored on to the other sites NAS devices? What kind of software would this require (any known freeware around)? If one NAS would go down, the user would be automatically directed to another NAS. Any other suggestions?
nc-techAsked:
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Hedley PhillipsOwnerCommented:
DFS would be perfect for you here.

That isn't the sofa company, but Distributed File System
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Hedley PhillipsOwnerCommented:
Ok,

here is a link for you.

http://www.microsoft.com/windowsserver2003/technologies/storage/dfs/default.mspx

It basically keeps all of the sites mirrored while the users only see a link to the data so they don't actually know where it is.

Or, you could use a command line tool like rsync (http://samba.anu.edu.au/rsync/) which runs on windows or linux and can mirror changes of files between sites either over ssh or plain old internet.
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nc-techAuthor Commented:
Thanks for the input so far. Can DFS be configured as to how much bandwith is used for replication between sites?  
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Hedley PhillipsOwnerCommented:
Yes:

The first bullet point on the link I posted states:

.."DFS Replication supports replication scheduling, bandwidth throttling.."

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Windows Server 2003

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