On 10/12/15 19:28, John Stoffel wrote: > At this point, you need to now look at your controllers and > motherboard and how they're configured. If all those drives are on > one controller, and if that controller is on a single lane of PCIe, > then you will see controller bandwidth issues as well. Very out of date ... we're talking the days of CD writers here ... but we used a pc to write bulk CDs, and we found we simply had to buy add-in IDE cards to get decent performance - two CD drives on the same PATA cable and response went through the floor - massively so. Cheers, Wol -- 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