It was 11, not 12. I misspoke: http://aws.amazon.com/glacier/faqs/ http://aws.amazon.com/glacier/faqs/ In this case, it's not as much service uptime as it is d

It was 11, not 12. I misspoke: http://aws.amazon.com/glacier/faqs/ http://aws.amazon.com/glacier/faqs/ In this case, it's not as much service uptime as it is data retention. If you're storing 5+ PB of data, even 5 9s of data loss per year can have a measurable impact.