Funny story: glacier was originally built on HDD, but the economics went sideways and some speculation about power saving techniques didn’t pan out. So to stop

Funny story: glacier was originally built on HDD, but the economics went sideways and some speculation about power saving techniques didn’t pan out. So to stop the bleeding aws moved glacier into s3, but kept a fake api with fake sleep statements and very real losses due to the pricing. During that time they reimplemented glacier to be the tape backed up version we have today. Bet you never even noticed. :-)