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That's just it - they're supposedly separate - but each zone is on the same physical site albeit seperated. Unlikely to break at the same time, but more likely
by fredsters_s 14y ago
That's just it - they're supposedly separate - but each zone is on the same physical site albeit seperated. Unlikely to break at the same time, but more likely than two separate locations. Just google for aws multi zone outages.
Anyway - the article isn't suggesting to use four datacentres, it's trying to make people aware of the simple steps that can be taken to avoid failure.
- tillk 14y agoOk, to be more obvious: by comparison, a multi-region setup is maybe over the top. Because essentially, you are distributing over something like eight data centers then. Because you cannot stay in a single AZ either – who knows what will go down and when. It's insane how this post is so high up on this website. But it goes to show that neither you or the author of this blog post have ever attempted any replication over WAN. Otherwise it would not be called simple.