sentences:  As a RAID 0 array striped across RAID 5 elements, minimal RAID 50 configuration requires six drives.On the right is an example where three collections of 120 GB RAID 5s are striped together to make 720 GB of total storage space.One drive from each of the RAID 5 sets could fail without loss of data; for example, a RAID 50 configuration including three RAID 5 sets can tolerate three maximum potential simultaneous drive failures (but only one per RAID 5 set).