I have to admit that, until recently, I've been negligent in my backup plan. Oh, I did the occasional database backup and have most of my files replicated on my local drive, but I didn't have a real plan. If disaster had struck I wouldn't have been prepared.
I often find myself working with data that's stored on multiple computers, and with KDE's network transparency this is an easy thing to do. But of course there are times when network access isn't available, and in this situation being able to easily sync data between two drives is a huge convenience. My solution is Smb4K.
Smb4K is first and foremost a share browser, but it has another unsung capability to syncronize between a share and a local folder.