I hope this isn't too far off topic for this list. Postgres is
the main application that I'm looking to accomodate. Anything
else I can do with whatever solution we find is just gravy...
You've given me a lot to go on... Now I'm going to have to do some
research as to real-world RAID controller performance. It's vexing
(to say the least) that most vendors don't supply any raw
throughput or TPS stats on this stuff...
One word of advice. Stay away from Dell kit. The PERC 4 controllers
they use don't implement RAID 10 properly. It's RAID 1 + JBOD array.
It also has generally dismal IOPS performance too. You might get away
with running software RAID, either in conjunction with, or entirely
avoiding the card.
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