I install crashplan on everything. Cross platform (java I think) crashplan+ is 60 bucks a year for "unlimited" storage and I'm pretty sure you can set up the cl

I install crashplan on everything. Cross platform (java I think) crashplan+ is 60 bucks a year for "unlimited" storage and I'm pretty sure you can set up the client to be headless. You can also have them generate the encryption keys or just provide them with your own and not upload the private keys to their servers.