Date: Thu, 27 May 2004 15:53:29 -0700 (PDT) From: Doug White <dwhite@gumbysoft.com> To: Vasenin Alexander aka BlackSir <blacksir@number.ru> Cc: freebsd-stable@freebsd.org Subject: Re: Penalty of using unsupported ServerWorks GC-SL chipset? Message-ID: <20040527155207.U53810@carver.gumbysoft.com> In-Reply-To: <NKEJKOHEKMBIMCCEHEPKCECGCNAA.blacksir@number.ru> References: <NKEJKOHEKMBIMCCEHEPKCECGCNAA.blacksir@number.ru>
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On Thu, 27 May 2004, Vasenin Alexander aka BlackSir wrote: > What penalty of using Tyan motherboard on unsupported ServerWorks > chipset GC-SL? I found a message in freebsd-questions: Benjamin Thelen > wrote that he tried using GC-SL and unable to use DMA on ATA. It's not > my case - on MB I intrested there is a Promise 20270 RAID controller > onboard, that supported (I asked Soren Schmidt). I apologise that there > can be problems with USB,PCI or some other things. Damn, HP, > Fujitsu-Siemens and some local companies using only GC-SL for low-cost > 1U server solutions :-( You again? :) There are known issues with the ServerWorks ROSB4 southbridge and data loss when run in DMA modes. I think ROSB5 forces simplex mode so you don't get as good a benefit as you would from a full-fledged ATA controller. But that is why the ATA RAID controller is on the board :-) The ROSB[45] were designed for CDROMs, not system disks (IMHO). -- Doug White | FreeBSD: The Power to Serve dwhite@gumbysoft.com | www.FreeBSD.org
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