What difference is there between information stored as proteins in a chains or as bytes on hard drive / neuron configuration in your brain. We just got used to

What difference is there between information stored as proteins in a chains or as bytes on hard drive / neuron configuration in your brain. We just got used to the DNA=life, but is this a valid assumption? Some exotic lifeforms could encode their self-defining information on silicium magnetic polarisation, electron spin or whatever. And you would call them life if they were standing and moving in an animal-like way.