Back that thing up!

Anyone have any good suggestions on an auto backup system. I was thinking about a cloud, or a wireless hard drive. What do you guys feel like is the best option where affordability meets reliability.

I would definitely go for cloud instead of a physical onsite hard drive. Personally I work on a dedicated space on my main drive, then move work I’m ready to commit to a separate folder that’s synchronized with the cloud. I don’t like working on an actual monitored folder because (it might be just superstition, but) I figure the sync process will compete for reads on the disk while I’m working in my DAW.