A lot of services that are supposedly running in EU are currently having significant issues due to AWS US-EAST-1 being impacted. But surely this is just some dependencies that are down and all our data is really stored in EU. Right?

https://health.aws.amazon.com/health/status

@harrysintonen I don't have details over this particular incident, but many of the core "global" AWS services like IAM live in us-east-1. When that region is down, other regional services will almost surely be impacted. Which means that your data, even if it's not stored in us-east-1, might not be accessible during an outage of that region. I think this is the most likely explanation based on my experience.

(Source: ex-AWS software engineer.)

@andxor Indeed in many (if not most) situations the reason for outages was just some dependant service being unavailable. There's of course need for further discussion whether it's smart to put 1/3 of all your eggs to a single basket in the first place.

@harrysintonen indeed. Also, in relation to data sovereignty: a lot of people focus on where the data is *stored*, but not on where access to the data is *controlled*.

If the US goes rogue and becomes an enemy of the EU, you can cut the overseas network cable between the datacenters, but good luck with recovering all that data encrypted at rest!

@andxor @harrysintonen

I mean, presumably any half-competent company would have an on-site server whose sole function is to download data from the cloud for local storage.

You can get something like 500TB of storage on a rack for $50,000, which is almost nothing for any reasonably large company.

@rastilin @harrysintonen and do you think companies actually do that? They actually keep periodic, up-to-date copies of their backup? They actually do disaster recovery drills to ensure that the data in those backups is actually complete and stored correctly?

Or do you think they'll do the minimum necessary to be compliant to laws?