RAID-6 只是 RAID-5 的另外一種變形 http://www.pcguide.com/ref/hdd/perf...leLevel6-c.html

至少需要四顆 HD, 實際容量 = (Size of Smallest Drive) * (Number of Drives - 2)

RAID 5 則是至少三顆, 實際容量 = (Size of Smallest Drive) * (Number of Drives - 1)