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Date: Sun, 08 May 2011 15:53:43 +0200
From: Michael Fuckner <michael@fuckner.net>
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To: Michael Reifenberger <mike@reifenberger.com>
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Cc: FreeBSD-SCSI <scsi@freebsd.org>
Subject: Re: mpt(4) cuts 3TiB drives down to 2TiB
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On 05/08/2011 02:13 PM, Michael Reifenberger wrote:
> Hi,
> the manpage of mptutil states that mpt(4) doesn't support volumes
> greater 2TiB,
> it suggests to use the disks in JBOD mode.
>
> Even this seems only to work for disk with less than 2TiB.
>
> When attaching a Hitachi 7k3000 drive on the LSI SAS/SATA ports of a
> Supermicro X8ST3-F board I only see 4294967294 sectors while I get
> 976773168 sectors when
> attaching to the on board SATA ports.
>
> This leaves the onboard LSI controller useless for bigger disks.
Hi all,

This is probably due to old firmware- I've seen similar a while ago and 
I'm not sure if there is a firmware capable of >2TiB.

You should check in Controllerbios/ Post Screen if the drive is detected 
as 2 or 3TB.

Imho this issue is not related to FreeBSD.

Regards,
  Michael