antlists writes: > Yup. Raid 6 has two parity disks, and that's mirrored to give four > parity disks. So as an *absolute* *minimum*, raid-61 could lose four > disks with no data loss. Don't you mean 5 disks? At best 4 lost disks paird off in each raid1 means the raid6 sees two failures. One more disk failing isn't enough to take out another mirror so the raid6 keeps ticking.
