Comment by eatonphil

Check out Parity Lost and Parity Regained and Characteristics, Impact, and Tolerance of Partial Disk Failures (which this blog indirectly cites) if you'd like authoritative reading on the topic.

https://www.usenix.org/legacy/event/fast08/tech/full_papers/...

https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&d...