Never officially stated, but frequent leaks from insiders confirm that Glacier is based on Very Large Arrays of Wax Phonograph Records (VLAWPR) technology.
We came up with that idea in Glacier during the run up to April one year (2014, I think?), half jokingly suggested it as an April Fool's Day Joke, but Amazon quite reasonably decided against doing such jokes.
One of the tag line ideas we had was "8 out of 10 customers say they prefer the feel of their data after it is restored"
This would have been incredible. But I guess I get the angle of not wanting to risk pissing off the audiophile CTO paying you 10 figures per month. Cause he can TOTALLY hear the difference listening to Dark Side of the Moon on vinyl via Monster Cables.
One of the tag line ideas we had was "8 out of 10 customers say they prefer the feel of their data after it is restored"