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we use one windows 2003 server to sync files between two other windows servers. I assume that the whole traffic goes through the server initializing the sync.

If so, is there a way to trigger a copy between the 2 other machines without routing all through the first server?

Thank you! Regards, Uwe

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What method are you using to sync the files? Windows File Copy? Or a specific application? Need more details. – Mark Henderson Jul 20 '09 at 6:02
It's using an old version of synchromat (.com). So I assume it's just windows file copy. – Uwe Jul 20 '09 at 6:04
The way to do this on *nix computers is through ssh. – Brad Gilbert Jul 20 '09 at 17:44
up vote 4 down vote accepted

If you want to take the middle server out of the loop, you'll need to get one of the other two servers to initiate the copy. A combination of PsExec (as suggested by moshen) plus RoboCopy would do the trick efficiently and quickly.

RoboCopy has a bunch of command-line switches that make this kind of sync easy to do - just be sure to test thoroughly before you start mirroring deletes (/PURGE or /MIR), else you can purge both directories in the blink of an eye!

Depending on your network infrastructure, you might be interested in the /IPG:n switch, as it forces RoboCopy to wait between packets, allowing other network traffic to get through.

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Always have the data backed up before testing anything ^^ – Oskar Duveborn Jul 20 '09 at 10:05
Indeed. When I screwed up my RoboCopy settings, I managed to nuke both my master copy AND my primary backup in one go. Was very glad I had another backup that was both up-to-date and offline to use for restoration. – Bevan Jul 20 '09 at 23:30

You could use PsExec to initiate the copy remotely.

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Why not just add a scheduled task on the server you'd like to initiate the copy process?

Another way to remotely start a process n a remote machine is to have a Windows Service wrapper around the executable and trigger it with the net start command - it supports calling remote servers.

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how about taking an extra step and implementing DFS?

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