Hi folks,
My recollection was that there were a bunch of adapters that would work
with the COMSTAR stack.
I used Emulex LP9000 style cards, and had mixed results overall. I'd say
that any ZFS backed pool that you want to FC target like activities with
would be deeply in need of an SSD ZIL, or even primary storage. IIRC,
you need at least a 4gb FC card if you want to use Qlogic - possibly
even an 8gb one... (Which is why I went with the Emulex, as they were
cheap cheap cheap!)
The primary issue I encountered was synchronous commit latency. I could
make it 'go fast' by setting either zil_disable (*extra bad*), or
setting per-dataset sync=disabled (less bad, but still bad.) and
anything else was woefully slow.
I never did pony up for a decent SSD. I tried to fudge it with things
like HP P400 Caching raid controllers, but it was still reasonably crap
- as you could overwhelm the cache very quickly over 2 or 4gb F/C. It
*was* ok for smaller, bursty work though. :)
I'm actually considering another run at it as we speak, as I gave one of
those Intel 520 series 120GB SSD's a crack, and by golly, they are
snappy. :)
I was having a really good laugh when I realized that with 2 SSD's, in a
moderately modern motherboard with SATA3 could push close to a gigabyte
of read throughput and not far short on write. 1 Gigabyte per second...
I remember when that was about all you could get out of a high end disk
array...
Perhaps it's time for me to try to replace my old T3 FC array(s) with
yet another function on my primary Solaris server, especially as the
only thing I really need to make it come true is a couple-o-SSD's.
Oh - and to replace another failed disk - again.
Though - It looks like I might have actually found something interesting
with my frequent disk fails. Whilst creating the RMA on the seagate
site, I also did a search, and found a number of entries on my specific
2TB spindles (ST3200054AS, IIRC), and their issues with constant and
frequent head parking, causing the disks to fail prematurely. Seems
there *might* even be a firmware update to address it.
Fingers crossed.
Nathan.
On 20/04/2012 8:54 AM, Boyd Adamson wrote:
Wow, for home!?
I don't know what the availability of FC cards that can be used in
target mode is like, but if you can get one, then S11 with COMSTAR
could do it.
On Fri, Apr 20, 2012 at 8:05 AM, Duncan Gray <gray.dun...@gmail.com
<mailto:gray.dun...@gmail.com>> wrote:
Hi Guys,
I am looking for FC connectivity.
Cheers,
Duncan
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