Assuming HDD only, is there broad use case for RAID 4 that RAID 5 isn't equally or better suited for? What about making the parity drive an SSD, keeping the other drives HDD? Chris Murphy-- 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