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I want Windows 7 to synchronize two folders in real time (maybe running a service that monitors a folder)?

Basically I want to monitor a folder and synchronize each change (new files, changed files, deleted files) to another drive. It has to be in real time, so it gets synchronized instantly when a change happens. A one-direction synchronisation is enough.

I tried Microsofts SyncToy, but it does only syncing by hand or scheduled.

Can this be achieved with Windows 7 itself or does anyone know a freeware application for this?

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4 Answers

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Dsynchronize lets you do this. I'm not sure how it works in Windows 7 but it's freeware and standalone so there's no harm in trying.

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Thanks! I tried it and it works like a charm, runs flawlessly on Windows 7. – acme Nov 4 '09 at 14:13
I'm running this for nearly a year now. It's working quite well, though it's not syncing correctly if a large number of files is changed within a few moments (e.g. when unzipping or checking out a repository). But as I've not found something better, I'll still stick with it. – acme Sep 17 '10 at 15:16
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up vote 3 down vote

You could use a NTFS Symbolic Link so that the folders on each drive actually point to the same folder.

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That's an interesting approach, but I guess it won't work here, the mapped drive (the sync-target) is Linux. – acme Nov 4 '09 at 14:12
You can create a NTFS symbolic link to a Samba path, I have several on my desktop to my Ubuntu file server. – Chris Smith Nov 2 '11 at 18:53
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up vote 1 down vote

If you want to sync a folder to USB and you use Dropbox already, use the DropboxPortableAHK.

This way, I have my Dropbox files synced on any computer, as well as my iPhone using the Dropbox app and my USB drive I use at uni with this portable version.

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FreeFileSync is a great free tool that can compare and sync folders.

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But it does not support real-time synchronization as far as I can see. – acme Nov 3 '11 at 8:20
@acme But you can implement triggered syncronisation using the event scheduler in windows. – xav0989 Nov 23 '11 at 18:20
Yeah, but it should be instantly be sync'd on file modification (upon save a file should be copied to another directory), not only after recurring intervals. – acme Dec 21 '11 at 14:43
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