Wondering about mirror vs 2x2 raidz2 in a 16-disk array

In that case, you could consider also using 8-way or 7-way raidz2 (with hot spares)

Or go to raidz3 which sounds like it’d be similar to the 3 disk parity of the net app

But to answer your question, 4-way raidz2 is more resilient than mirrors, at the cost of some efficiency and performance.

But it seems like 3x 5-way RaidZ2 + 1 hot spare could be a very good compromise.

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