I am using an LSI 1068 SAS PCIe controller. I have 7 drives connected and am getting excellent performance. Depending on the layout of the case you can pickup a Supermicro version for less than $100. The issue is the components are mounted on the reverse side for the Supermicro UIO slot, so it takes up two bracket slots on a normal PCIe slot. Ryan On Wed, Mar 18, 2009 at 5:10 PM, Eyal Lebedinsky <eyal@xxxxxxxxxxxxxx> wrote: > A word of caution. 6 on-board SATA is not always enough. It is often the > case > that using all will hit internal bandwidth limits. I find it common for 4 > disks > to be handled OK but 5 are too much. > > A simple test of 5 concurrent dd's will tell you if all disks are going full > speed. > Some time one combination of 5 out of 6 (or 8) on-board sockets will perform > better > than other and it is worth checking. > > Eyal > > Goswin von Brederlow wrote: >> >> Dexter Filmore <Dexter.Filmore@xxxxxx> writes: >> >>> I want to upgrade server hardware here, currently I have 5 Samsungs (sATA >>> II) sitting on the onboard controller of an Asus K8N-E Socket754 board. >>> I guess the controller chips are both connected via PCI hence performance >>> isn't really hot. >>> >>> Basically I need either a board with at least 6x sATA-II attached via >>> PCIe or a "dumb" PCIe 4x or 8x controller card. >>> >>> Any recommendations? >>> >>> Dex >> >> Anything that is not pci. PCIe or PCI-X will both be way >> faster. Server boards with 6x SATA-II onboard are hard to miss. And >> any cheap PCIe/PCI-X controler will probably do. >> >> One important thing to think about is hotplug support. Do you need it >> or not? >> >> Look for a board and then check out http://linux-ata.org/ for support. >> >> MfG >> Goswin > > -- > Eyal Lebedinsky (eyal@xxxxxxxxxxxxxx) > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
