Hi Luke,
I forgot about that article, thanks for that link. That's indeed a nice
overview of (in august) recent controllers. The Areca 1280 in that test
(and the results I linked to earlier) is a pre-production model, so it
might actually perform even better than in that test.
We've been getting samples from AMCC in the past, so a 96xx should be
possible. I've pointed it out to the author of the previous
raid-articles. Thanks for pointing that out to me.
Best regards,
Arjen
On 22-11-2006 22:47 Luke Lonergan wrote:
Arjen,
As usual, your articles are excellent!
Your results show again that the 3Ware 9550SX is really poor at random I/O
with RAID5 and all of the Arecas are really good. 3Ware/AMCC have designed
the 96xx to do much better for RAID5, but I've not seen results - can you
get a card and test it?
We now run the 3Ware controllers in RAID10 with 8 disks each and they have
been excellent. Here (on your site) are results that bear this out:
http://tweakers.net/reviews/639/9
- Luke
On 11/22/06 11:07 AM, "Arjen van der Meijden" <acmmailing@xxxxxxxxxxxx>
wrote:
Jeff,
You can find some (Dutch) results here on our website:
http://tweakers.net/reviews/647/5
You'll find the AMCC/3ware 9550SX-12 with up to 12 disks, Areca 1280 and
1160 with up to 14 disks and a Promise and LSI sata-raid controller with
each up to 8 disks. Btw, that Dell Perc5 (sas) is afaik not the same
card as the LSI MegaRAID SATA 300-8X, but I have no idea whether they
share the same controllerchip.
In most of the graphs you also see a Areca 1160 with 1GB in stead of its
default 256MB. Hover over the labels to see only that specific line,
that makes the graphs quite readable.
You'll also see a Dell Perc5/e in the results, but that was done using
Fujitsu SAS 15k rpm drives, not the WD Raptor 10k rpm's
If you dive deeper in our (still Dutch) "benchmark database" you may
find some results of several disk-configurations on several controllers
in various storage related tests, like here:
http://tweakers.net/benchdb/test/193
If you want to filter some results, look for "Resultaatfilter &
tabelgenerator" and press on the "Toon filteropties"-tekst. I think
you'll be able to understand the selection-overview there, even if you
don't understand Dutch ;)
"Filter resultaten" below means the same as in English (filter [the]
results)
Best regards,
Arjen
On 22-11-2006 17:36 Jeff Frost wrote:
On Wed, 22 Nov 2006, Bucky Jordan wrote:
Dells (at least the 1950 and 2950) come with the Perc5, which is
basically just the LSI MegaRAID. The units I have come with a 256MB BBU,
I'm not sure if it's upgradeable, but it looks like a standard DIMM in
there...
I posted some dd and bonnie++ benchmarks of a 6-disk setup a while back
on a 2950, so you might search the archive for those numbers if you're
interested- you should be able to get the same or better from a
similarly equipped LSI setup. I don't recall if I posted pgbench
numbers, but I can if that's of interest.
I could only find the 6 disk RAID5 numbers in the archives that were run
with bonnie++1.03. Have you run the RAID10 tests since? Did you settle
on 6 disk RAID5 or 2xRAID1 + 4XRAID10?
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