yes mirroring can pull your bass outta the grass in a crisis. I am not against it, but you have these expensive drives performing nothing but constant current backup that are only used if a certain kind of crash occurs.

I will say one more word about it: we all should beware becoming lulled by a mirrored array on this score: if it causes us to put off REAL backup for a week, two weeks, whatever....if the entire rig is stollen or melted down or something....all is lost back to the last REAL backup.