Now that I’m implementing AuFS along with FlexRAID, I am debating on how to best make use of these technologies.
The way I see it, data will fall into one of these 3 categories:
– Data that is in a Raid set as well as mirrored to another drive
– Data that is in a Raid set
– Data that I don’t mind loosing. (not part of a Raid set or mirrored)

I just need to decide what data falls into what category.