RAID 6 is based on the same concept as RAID 5, but it adds another layer of security by generating parity data across multiple data rows. Recalculating this requires complex matrix and reverse matrix algebra and can keep even the latest hardware pretty busy.You can check it out over here.
RAID 6 controllers roundup
Posted on Monday, Jan 02 2006 @ 20:41 CET by Thomas De Maesschalck
Patrick and Achim from Tom's Hardware Guide have compared a couple of RAID 6 storage controllers: