Vasenin Alexander aka BlackSir
2004-May-26 23:01 UTC
Penalty of using unsupported ServerWorks GC-SL chipset?
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 :-( Vasenin Alexander aka BlackSir
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