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Hi RRB and Etienne,
I understand that this item is a bit confusing so I’ll do my best to explain.
Theoretically, it is possible to retrieve an object from S3 Glacier Deep Archive in just 12 hours (and maybe a few minutes leeway)
If you view this AWS blog, https://aws.amazon.com/blogs/aws/new-amazon-s3-storage-class-glacier-deep-archive/ , you can see in the restore screenshot that standard retrieval time is typically within 12 hours.
Another blog post here, https://aws.amazon.com/about-aws/whats-new/2019/03/S3-glacier-deep-archive/ , mentions in verbatim “All objects stored in the S3 Glacier Deep Archive storage class are replicated and stored across at least three geographically-dispersed Availability Zones, protected by 99.999999999% durability, and can be restored within 12 hours or less.“
The “or less” part is this scenario’s way of making the correct option trickier to spot. The key part is the latter section, which asks for the most cost-effective storage class to use.
I hope I was able to clarify the item for you. Thank you for raising this item too.
Regards,
Adrian Formaran @ Tutorials Dojo
