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AWS Advocates Eventual Consistency, and I believe offers less than 3 nines guaranteed uptime on many products.

We've been taught to build distributed system with unreliable componens and temporaral JIT eventual consistency.

Of course we can run production cloud-scale operations on unreliable systems. And single power supplies without ECC or RAID is pretty low on my list of things that cause outages. Most big hadoop/cassandra shops are running without raid and without redundant power.

hadoop/cassandra are replicated to multiple nodes by the software. That's a terrible argument for not using any raid in regular setups.

I suspect your and my definition of regular setups is different. My regular setups are stateless and automatically installed and configured.

Lucky you, never having to deal with any database or storage.

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