Yep I get about the same speed as you Marc on single file access testing per VM. It goes down for me a bit since I believe I am hitting CPU wait with 24 VMs running. :) I doubt disk RAID controller is the bottleneck at that point. On Feb 27, 2014 4:12 PM, "Marc Skinner" <marc at e-skinner.net> wrote: > I'm getting 415-430 MB/s with a Raid 10 SATA-III with 6 disks with mdadm. > RHEL 6.5, on a AMD FX-6 core. > > It is a dedicated ISCSI server that serves 6 kvm hypervisors their shared > VM storage. > > > > > On 02/27/2014 12:51 PM, John Frisk wrote: > >> Try the LSI hardware RAID cards. Yes they are expensive but that is >> hardware RAID. I personally use the 9266-8i series cards for my servers. >> With 6 disk SATA-III RAID 10 ( 1+0 ) I can get about 350 MB/s >> throughput. Zoom. :) >> >> On Feb 27, 2014 12:46 PM, "Carl Wilhelm Soderstrom" >> <chrome at real-time.com <mailto:chrome at real-time.com>> wrote: >> >> I find myself clueless about the state of hardware again. >> >> It used to be that I recommended 3ware RAID controllers because: >> >> 1. they had good Linux drivers built into the kernel >> 2. they were reliable >> 3. they had a really good management tool suite under Linux >> >> However, it looks like 3ware has abandoned the low-end RAID market >> and the >> cheapest controller of theirs which I find on Newegg is ~$440. Gone >> are the >> days of $120 2-port controllers for desktop use. >> >> Does anyone have a recommendation for a hardware RAID controller to >> mirror >> drives for a desktop Linux box? >> >> I really don't want to go back to the days of software RAID. >> >> -- >> Carl Soderstrom >> Systems Administrator >> Real-Time Enterprises >> www.real-time.com <http://www.real-time.com> >> _______________________________________________ >> TCLUG Mailing List - Minneapolis/St. Paul, Minnesota >> tclug-list at mn-linux.org <mailto:tclug-list at mn-linux.org> >> http://mailman.mn-linux.org/mailman/listinfo/tclug-list >> >> >> >> _______________________________________________ >> TCLUG Mailing List - Minneapolis/St. Paul, Minnesota >> tclug-list at mn-linux.org >> http://mailman.mn-linux.org/mailman/listinfo/tclug-list >> >> > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20140227/0aa5ef56/attachment.html>