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curuinorlast Tuesday at 10:50 PM11 repliesview on HN

They guaranteed 11 9's durability, didn't they?

e: Yep

https://aws.amazon.com/s3/storage-classes/


Replies

jameshartyesterday at 9:55 PM

The footnote which says that is the design durability against equipment failure literally begins:

> In the unlikely case of the loss or damage to all or part of an AWS Availability Zone, data in a One Zone storage class may be lost. For example, events like fire and water damage could result in data loss

stackskiptonyesterday at 9:41 PM

Even if they have payable SLA on this, most SLAs have Acts of God and Acts of War exemption.

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ciberadotoday at 6:23 AM

If they haven't changed it recently, 11 nines is the durability target by design, but it is not set in any SLA. the S3 SLA is focused on availability.

shepherdjerredtoday at 2:02 AM

It seems unreasonable to blame Amazon here. The AZ was destroyed. Are they supposed to have missile/drone defense?

I'm not going to complain to DoorDash if my order is delayed due to a car crash

beejiuyesterday at 9:49 PM

The SLA excludes force majeure.

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jonahxyesterday at 9:32 PM

I don't think this has any teeth. They don't compensate in the event of loss afaict.

rbanffyyesterday at 9:36 PM

Considering all the data they have globally, they might still be compliant.

advisedwangyesterday at 9:49 PM

They say it's "designed for" 11 9s, not guaranteed.

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kmeisthaxtoday at 3:41 AM

Hot take: if you have a service that is 11 nines reliable, but there is an underlying component whose reliability is lower, cap the nines to that component.