Thanks for the response, but I'm not sure I understand what you mean. If I just copy (not image) the partition using Crashplan, will that be good enough? I guess I don't understand the difference between an image and a backup. I am guessing the recovery partition is already an image of the original boot drive, and all I need to do is back that partition up offsite to ensure it doesn't get destroyed.
i mean if system is infected by the virus or any other software problem occurred then recovery partition is useful. but if sometime harddisk may crash that time you need a backup image from another drive.