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Date: Wed, 16 Nov 2011 09:23:03 -0700 (MST)
From: Warren Block <wblock@wonkity.com>
To: Andrea Venturoli <ml@netfence.it>
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	(wonkity.com [127.0.0.1]); Wed, 16 Nov 2011 09:23:04 -0700 (MST)
Cc: Pegasus Mc Cleaft <ken@mthelicon.com>, freebsd-questions@freebsd.org
Subject: Re: ATA trouble again
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On Wed, 16 Nov 2011, Andrea Venturoli wrote:

> On 11/16/11 12:23, Pegasus Mc Cleaft wrote:
>
>> 	Are you using ZFS?
>
> No.
> I'm using gstripe.
>
>
>
>> or do you know if the drives are using 4096 bytes
>> Per sector?
>
> How do I find out without physical access to the box?

diskinfo -v /dev/ada0

Although it may lie about true sector size.  Otherwise, get the model 
number from dmesg and search on it.