Comparing ZFS RAID and HW RAID
It´s one of the long lasting myths, that RAID needs hardware to be fast. It´s like “Disable autoneg” and “1 MHz per MBit”. Those rules were true in the past but obsoleted by the time. But the RAID myth seems to be more persistant than all other before. Whenever i talk about ZFS RAID, the people stare at me and and i see the though “Oh, no, the guy talks about slow SW RAID”. Okay, when you don´t believe me perhaps you believe a user our products: Robert Milkowski gives some numbers on RAID performance here and here.