Will Clarke

AWS S3 has insane durability


AWS S3, the “simple storage service”, stores data. It can store a lot of data. And it can store it reliably.

S3 has 99.999999999% durability. There are so many nines there it’s difficult to fully comprehend what that means.

For example, if you store 10,000,000 objects with Amazon S3, you can on average expect to incur a loss of a single object once every 10,000 years.

In my opinion the reverse is even more impressive; if you stored 10,000 objects for 100 million years, you’d only lose one.

It’d be interesting to see how they achieve that.


aws s3