John-Paul Drawneek wrote:
got a 12 disk system - all 18gb
2 mirror for boot, now what to do with the rest?
The storage is to be used for user space, web stuff and to store anything else
(dump for data).
I could do 5 mirrors, but thats a wasting quite a bit of space.
Was thinking about raidz2, as its almost as reliable and better for space.
Should i do 9 disk raidz2 with a spare, or could i do two raidz2 to get a bit
of performance?
Only done tests with striped mirrors which seems to give it a boost, so is it
worth it with a raidz2 of this small size?
Thanks for any help
Consider that 18GByte disks are old and their failure rate will
increase dramatically over the next few years. Do something to
have redundancy. If raidz2 works for your workload, I'd go with
that.
BTW, I was just at Fry's, new 500 GByte Seagate drives are $180.
Prices for new disks tend to approach $150 (USD) after which they
are replaced by larger drives and the inventory is price reduced
until gone. A 2-new disk mirror will be more reliable than any
reasonable combination of 5-year old disks. Food for thought.
-- richard
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