> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> boun...@opensolaris.org] On Behalf Of Anonymous
> 
> Hi. I have a development system on Intel commodity hardware with a 500G
> ZFS
> root mirror. I have another 500G drive same as the other two. Is there any
> way to use this disk to good advantage in this box? I don't think I need
any
> more redundancy, I would like to increase performance if possible. I have
> only one SATA port left so I can only use 3 drives total unless I buy a
PCI
> card. Would you please advise me. Many thanks.

If you make it a 3-way mirror, your write performance will be unaffected,
but your read performance will increase 50% over a 2-way mirror.  All 3
drives can read different data simultaneously for the net effect of 3x a
single disk read performance.

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