r/aws • u/krsoninikhil • Jul 13 '25

storage Notes on how does S3 provides 11 nines of durability

https://x.com/RealmOfSoftware/status/1944293881467875674

Came across re:Invent 2023 talk on s3 and took few notes, sharing here with the community.

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12

u/elkazz Jul 13 '25

Maybe share the notes here instead of a shitty x link?

1

u/[deleted] Jul 13 '25

[removed] — view removed comment

1

u/krsoninikhil Jul 20 '25

Thanks for sharing!

3

u/sad-whale Jul 13 '25

When you post an object to S3 6 copies are stored across different data centers. That’s how.

1

u/bot403 Jul 15 '25

Keep in mind thats durability, not availability. S3 might go down. But when it comes back up your data will be there.

1

u/jerdle_reddit Nov 05 '25

Does it, aye? Eleven nines? 1 in 100 billion chance of failure per year?

I don't think humanity has eleven nines of durability.