From: Thomas Harold <thomas-lists at nybeta.com> > Yah, RAID-5 is a bad idea anymore with the large drive sizes. RAID-6 or > RAID-10 is a far better choice. > > I prefer RAID-10 because the rebuild time is based on the size of a > drive pair, not the entire array. Anyone tested RAID 50 and/or 60 arrays? "RAID-50 – Striping of Distributed Parity Arrays: RAID 50 is a combination of RAID 5 and RAID 0. A RAID 5 set must have at least three disks. RAID 50 strips data across each RAID 5 subset. RAID 50 provides a higher degree of fault tolerance since 1 drive per RAID 5 set may fail without data being lost. A performance increase over RAID 5 may be realized depending on the configuration due to fewer disks reads per parity calculation." "RAID-60 – Striping of Dual Parity Arrays: RAID 60 is striping over more than one span of physical disks that are configured as a RAID 6. RAID 60 strips data across each RAID 6 subset. RAID 60 provides a higher degree of fault tolerance since 2 drives per RAID 6 set may fail without data being lost. A performance increase over RAID 6 may be realized depending on the configuration due to fewer disks reads per parity calculation." Supposed to be safer in big arrays where the big number of disks means higher possibility of failure... JD