> I have a system that uses drives on all channels, eg master/slave. > and I have encountered any slowdown, by using primary and secondary disks > in the same channel. > Yes it is slower, but for me performance is good enough. With two drives per channel, doesn't a disk failure pull down the other drive, causing the entire array to fail, and require a reboot to bring the degraded array back online? - 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