Everything You Know About Disks Is Wrong by Robin Harris | Tuesday, February 20, 2007 | Clusters, Enterprise | 87 comments Update II: NetApp has responded. I’m hoping other vendors will as well. Which do you believe? Costly FC and SCSI drives are more reliable than cheap SATA drives. RAID 5 is safe because the odds of two drives failing in the same RAID set are so low. After infant mortality, driv