From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bill Davidsen Subject: Re: recommended 4port SATA controller ? Date: Tue, 13 Oct 2009 17:19:33 -0400 Message-ID: <4AD4EEE5.8040806@tmr.com> References: <4AB22135.7030405@kaneda.iguw.tuwien.ac.at> <87f94c370909170549v156f9b23ie19f7204e21819f1@mail.gmail.com> <4AB23978.8090706@grupopie.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4AB23978.8090706@grupopie.com> Sender: linux-raid-owner@vger.kernel.org To: Rui Santos Cc: Greg Freemyer , Rainer Fuegenstein , linux-raid@vger.kernel.org List-Id: linux-raid.ids Rui Santos wrote: > Greg Freemyer wrote: > >> On Thu, Sep 17, 2009 at 7:44 AM, Rainer Fuegenstein >> wrote: >> >> >>> hi, >>> >>> I need to move my 4 disk raid5 array from a motherboard with 4 onboard SATA >>> ports to a mainboard with just 2 ports. therefore I'm looking for a reliable >>> and inexpensive 4port PCI controller. >>> >>> >> Rainer, >> >> The support chips are not always available in all flavors of PCI, so >> you need to specify which flavor PCI slots your mother board has. >> >> I don't recall seeing a non-raid 4-port "legacy PCI" controller, but I >> can't say I've looked very hard. Hopefully your motherboard has a >> "PCI express" slot available. >> >> If PCI is all you have, I would go with a pair of SiiG controllers. >> 2-ports each, but they only cost $30 or so. I have a dozen machines >> at least with the 2-port SiiG PCI controllers in them and have had no >> issues with linus drivers, etc. >> >> > There is an Addonics PCI card that will do what you want. > http://www.addonics.com/products/host_controller/adsa3r5-e.asp . I have > one of those. > > Advantages: > - PCI V2.3 66MHz compliant. It will deploy 2.6Gbits/sec. > ??? I don't know what they mean by "deploy," but I know what 133MB/s means in the PCI bus standard, and 2.6Gbit isn't it. I suspect that's max write speed for an N-way raid, N copies of the same data going to each drive fed from memory at bus max, but it certainly doesn't mean transfer between storage and memory. Sounds like a spec they put in advertising, big meaningless (or nearly so) number. Factual, but not a normal use case. > - Low profile > - RAID fetature > - Support PMP > - Esata > Don't think that's what's desired, could be wrong. > Disadvantages: > - Price > - RAID needs to be set on Windows machine > > Check it out... > Agree, my BS detector occasionally gets false positives. -- Bill Davidsen Unintended results are the well-earned reward for incompetence.