RAID setups, usage, Q's' effect of spindle groups...etc...blah blahblah...

[Linda Walsh]

> If nothing else I hopefully got the point across as to how destructive
> parity RAID read-modify-write operations are to performance.  It's
> simply impossible to get good mixed IO performance from parity RAID
> unless one's workloads always fit in controller write cache, or if one
> has SSD storage.
> 

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Will have to reread it a few times to digest everything (but it is sufficiently
depressing...)...

Especially the costs on the enclosures...I am pretty sure I paid under 1k for
each of them....*ouch*...