I've been using the same ZFS array since 2009... At first, I assumed that RAIDZ was the obvious way to go. But I switched to a concatenation of mirrored pairs;

I've been using the same ZFS array since 2009... At first, I assumed that RAIDZ was the obvious way to go. But I switched to a concatenation of mirrored pairs; I grow the array by adding another pair to it. I've actually had six disks fail in six months, without data loss. Was scary. But wow.