Where to back up my library?

I am slowly moving into the brave new world. (no reference to Steve Miller to give you an idea of my age!).
Anyway--I have an AK240 loaded with high res music downloaded from sites like HD Tracks and Apple (converted to AIFF). Storage is on my MAC.

My intent is to add a "server/streamer/storage" unit like the Aurender  N100H to my home stereo. (I have recently added an Audio Alchemy DDP-1).

My question is--can high rez music be safely stored on the cloud or similar? I would like the added safety as well as the future ability to stream it to either the AK 240 or the Aurender.