On 1/13/07, Richard Elling <[EMAIL PROTECTED]> wrote:
And a third choice is cutting your 40GByte drives in two such that you
have a total of 6x 20 GByte partitions spread across your 80 and 40 GByte
drives. Then install three 2-way mirrors across the disks. Some people
like such things, and there is merit to such designs.
disk1 20 GBytes <- mirror -> disk2 20 Gbytes
disk2 20 GBytes <- mirror -> disk3 20 Gbytes
disk3 20 GBytes <- mirror -> disk1 20 Gbytes
total available space: 60 GBytes. Better performance for some workloads
than raidz.
You will then lose disk_write_caching on the 2 40G disks. Is there
any benchmarks on the impact of these choices?
1) raidZ 3 x 40G
2) your above suggestion
Of course, disk1 is really 80G so ZFS does not have the whole disk anyway.
BTW, I recently bought a 160 GByte IDE disk, new in the box for $20 from a
major retail chain. If it were my choice, I'd spend $20.
Luck you.
--
Just me,
Wire ...
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