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Date:      Thu, 22 Sep 2011 22:33:07 +0300
From:      Daniel Kalchev <daniel@digsys.bg>
To:        Jason Usher <jusher71@yahoo.com>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: redux: 48 or 96 sata3 paths ... specific ZFS hardware proposal
Message-ID:  <F86987BD-2FCC-4C61-B10B-7F28B10AD959@digsys.bg>
In-Reply-To: <1316713529.81545.YahooMailClassic@web121201.mail.ne1.yahoo.com>
References:  <1316713529.81545.YahooMailClassic@web121201.mail.ne1.yahoo.com>

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On Sep 22, 2011, at 20:45 , Jason Usher wrote:

> But the X8DTH-6F motherboard seems too good to be true ... it has 7 8x =
pcie slots, and further, has two sff8087 connectors onboard with the =
EXACT SAME LSI chipset as the 9211-8i cards above - so you can get an =
extra 8 drives on this motherboard using the same driver.  Takes =
xeon5500/5600 (6core, potentially) at 6.4 QPI ... so, very modern there.

I have a system working with this motherboard and Supermicro E16 =
extender. There were some strange behavior with the expander when using =
the version 9 firmware, but that was just as it was published and no =
Supermicro version existed --- it might be ok now: the ses device showed =
4 times and sometimes drives were replicated as well. I guess that might =
be related to the mps/expander combination (at that time). It works fine =
with version 7 firmware.

How many LSI cards do you intend to use? You may wish to look at the =
architecture (CPU/chipset/PCIe interconnects) in order to make more =
informed decision.=20

Daniel=



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