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We're backing up data (copying flat files) to a NAS on the LAN from a main server and across a VPN link from a remote office. <br />
I need a robust file copy program that does logging, bandwidth throttling, and email notification. I've been testing Vice Versa and it fits in well, but I've had some issues with stability because we're synching 150+ GB of data nightly.<br />
What I would like to see is a program that offers continuous protection of files, backing them up as soon as they change, both in the LAN and across the VPN.<br />
The budget is about 100 per license.<br />
I've looked at rsync but its a bit cryptic and theres not much of a gui.
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We're backing up data (copying flat files) to a NAS on the LAN from a main server and across a VPN link from a remote office. 
I need a robust file copy program that does logging, bandwidth throttling, and email notification. I've been testing Vice Versa and it fits in well, but I've had some issues with stability because we're synching 150+ GB of data nightly.
What I would like to see is a program that offers continuous protection of files, backing them up as soon as they change, both in the LAN and across the VPN.
The budget is about 100 per license.
I've looked at rsync but its a bit cryptic and theres not much of a gui.

Robust file sync software with logging and email notification

A server is a computer program or a machine that waits for requests from other machines or software (clients) and responds to them. This architecture is called the client–server model. The clients may run on the same computer or may connect to the server over a network. The purpose of a server is to share data or hardware and software resources among clients. Typical computing servers are database servers, file servers, mail servers, print servers, web servers, game servers, and application servers.