3rd party tool to sync C:\My Documents w/Server?

[Guest]

I have 10 remote offices all running DSL. In those offices the users have
choosen to save files to their local My Documents folder. They all have a
home directory on our server, but the connection is too slow for them to work
efficiently. I'd like to backup My Documents to their home directory with a
tool that does byte level copies.
I'm using xcopy to update the home directory (looked at Robocopy, but it
doesn't seem to have the update option only mirror), but I'm worried it will
bottleneck soon. Any ideas on a 3rd party tool?

 

[Michael Bednarek]

I have 10 remote offices all running DSL. In those offices the users have
choosen to save files to their local My Documents folder. They all have a
home directory on our server, but the connection is too slow for them to work
efficiently. I'd like to backup My Documents to their home directory with a
tool that does byte level copies.
I'm using xcopy to update the home directory (looked at Robocopy, but it
doesn't seem to have the update option only mirror), but I'm worried it will
bottleneck soon. Any ideas on a 3rd party tool?

That's not how I understand RoboCopy's /MIR works; I believe it implies
"Update", so identical files will not be copied again.