Double-Take alternative.

[azfar]

We are planing to use double-take on our mision critical windows/linux servers. I have also evaluated it but before taking the final decision I am curious if there is any open source available which provide me such functionality.

http://www.doubletake.com/english/produ ... fault.aspx

If someone knows such thing then please let me know.

Thanks in advance.

[azfar]

any ideas?