[khafra]

> modulo hiccups that can bring it down by a factor of 5.

The comments on reddit indicated hiccups more on a factor of 10x and, sometimes, 100x.

Either way, the issue is that the more drives you add to your RAID0, the more often one of those drives experiences a "hiccup," and kills the performance of the entire volume.

[parasubvert]

It's not clear this was a single volume problem so much as an issue with one or more network switches in that availability zone (if you look at the AWS service health notes for that date).

Even in your own data centre, if your FC fabric goes wonky, your whole SAN is hosed.