My solution was to get sufficient local storage for current projects and then sign up for unlimited cloud storage.

I then move things I don't need 'right now' to that storage where it is backed up and managed for what I consider a reasonable fee, considering everything else I get with the service.
For instance I can freely share the space during projects.
As an example, the image below shows some guitar tracks I received from JazzManDan (now calls himself MusicStudent here) back in 2010 .. and I know they are still available.
The JonWax folder contains extremely rare tracks by MC Breed right before his death in '08 (the tracks are actually still being fought over legally .. so sad because nobody will ever hear them and nobody makes any money)

Anyway, it's all there and I don't have to worry about it. I can also access it from anywhere at any time.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
cloud.jpg (49.42 KB, 142 downloads)

I do not work here, but the benefits are still awesome
Make your sound your own!