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Date: Sun, 4 Jul 2010 00:53:36 +0100
From: Bruce Cran <bruce@cran.org.uk>
To: Bucarr <bucarr@gmail.com>
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Cc: freebsd-fs@freebsd.org
Subject: Re: zfs on 4k sector disks
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On Sat, 3 Jul 2010 11:28:03 -0700 (PDT)
Bucarr <bucarr@gmail.com> wrote:

> I was wondering that as well.  So I set up a new FreeBSD8.0 box with
> a UFS2 disk as my boot disk and two WD 2TB EARS drives ("Advanced
> Format") for a zfs data array.  I made no attempt to alter the WD
> drives in any way and ignored the 512b vs 4096b issues.  'zpool
> create tank raidz da0 da1' set up the array in a few seconds and I've
> copied to/from with no troubles and no apparent performance issues
> that I care about.  If I had more of the WD drives lying around, I'd
> add those to the array and see what gives then.

I suspect the performance may be acceptable, but probably not great.
I thought I didn't have any problems with RAIDZ's variable stripe size
on my EARS drives either until I found some writes would suddenly take
ages to finish, causing applications to hang. 

-- 
Bruce Cran