Drive encryption (asking for a good friend)

[Gregory]

I use encryption everywhere to protect my files mostly from burglary.
Most CPU have dedicated functions for encryption (AES) making the overhead on the CPU pretty low.

On the NAS (freenas) and my backup online (Crashplan) I use the dedicated functions, on Windows I use BitLocker.

I don't use an external hard drive for backup, if I had to, I'll get one with hardware encryption and use that.