Failover site - looking for extension

I am looking for an extension that will allow me to periodically copy my data from one server to another so that I can provide failover when there are outages on my opencart site.

It seems like this one would do it:

http://www.opencart.com/index.php?route ... n_id=10746

Does anyone have any experience with this extension? It doesn't have to be terribly automated, but I am capable of doing a dump and import by myself, so if I'm going to pay for an extension I would like one that will at least handle that part for me! I like the "migrate" description of this, and wonder if it would do what I'm looking for. I.e., if I have a duplicate site set up, and "migrate" the data from my current site to that one periodically, would that be a type of automated process to avoid the manual dump/import? I can rsync the downloads directory and such, so I really just want a way to easily get the shopping cart database data back and forth as required.

I have been using this for WordPress http://t.deliciousbrains.com/aff_c?offe ... ff_id=1151 and it allows me to do for WordPress what I'm looking for for OpenCart.

Any thoughts/comments/suggestions appreciated!

Thanks.

Danita