Date: Sat, 22 Jul 2006 20:13:02 -0500 From: "Nikolas Britton" <nikolas.britton@gmail.com> To: "Chad Leigh -- Shire.Net LLC" <chad@shire.net> Cc: "freebsd-questions@FreeBSD.org" <freebsd-questions@freebsd.org> Subject: Re: Areca RAID Card. Message-ID: <ef10de9a0607221813v5bfc960crae6fc15c584eb06b@mail.gmail.com> In-Reply-To: <B353A74B-DA62-4633-B5C5-16FD2CA503A5@shire.net> References: <ef10de9a0607220314j6f55c2d5x6f3219e6227017e9@mail.gmail.com> <B353A74B-DA62-4633-B5C5-16FD2CA503A5@shire.net>
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On 7/22/06, Chad Leigh -- Shire.Net LLC <chad@shire.net> wrote: > > On Jul 22, 2006, at 4:14 AM, Nikolas Britton wrote: > > > The motherboard I just bought, SuperMicro X7DBE, has both PCI-X > > 133MHz/64-bit and PCI-Express 8x slots, I can't decide what version of > > the Areca card to get... I'd like to see some benchmarks of the > > ARC-11xx (PCI-X) Vs. the ARC-12xx (PCI-Express). > > > > The PCIe device has a faster bus (PCIe 8x = 2000MB/s) but PCI-X is > > tried and true and not too shabby (PCI-X 133/64 = 850MB/s) ether. > > > > I have the option of ether a 1130ML (Infiniband connections) or a plan > > jane 1230. I've had troubles with SATA cables in the passed so the > > 1130ML is very desirable from this stand point. Another thing I'm > > worried about is the 1230 will have to much weight on the PCIe 8x slot > > because of all the SATA cables. and routing them all is a pain. Does > > anyone have a source for an ARC-1230ML? On the other hand I've never > > tried the latching SATA cables yet... but the ARC-1130 is $40 > > cheaper... > > I was just looking at the difference between the 1130 and the > 1130ML. ML cables are EXPENSIVE and look heavier than 4 normal > cables... But they latch on and you only need 1 ML cable for every 4 SATA cables. The PCI-X card/slot should be sturdy enough but I don't think PCIe is, I've played with PCIe 1x cards and their super small... picture a normal low profile PCI card, now take half that. Maybe they don't make them (ARC-12xxML) for this reason. > I just ordered an 1120 from <http://www.topmicrousa.com/controllers-- > tekram.html> and they were the cheapest I've seen. > > Will be needing an 1130 myself soon I think. > > Can't help you with the 1130 vs 1230. I would think the PCIe would > be the way to go for future proofing your investment. > Yes I think your right here. If you look at the "ATTO STRs and cache transfer rates"[1] the ARC-1120 (PCI-X) is up against the bus limit. theoretically the 1120/1220 could do up to 2400MB/s (8 drives * SATA-II transfer limit of 300MB/s). "The results of the Areca ARC-1120 in the RAID 0 tests cleary show this adapter does not have any trouble with ATTO's tiny dataset. Floating high above the crowd, the ARC-1120 has a perfect view on the struggles of the other adapters. Exceeding 750MB/s, the transfer rates from the Areca ARC-1120 are almost equal to the effective bandwidth of the 133MHz PCI-X bus." [1] [1] http://tweakers.net/reviews/557/18 -- BSD Podcasts @: http://bsdtalk.blogspot.com/ http://freebsdforall.blogspot.com/
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