Vap0r.net

RAID levels defined by the engineers at Berkeley University

Provides decent performance but no data redundancy or fault tolerance

Better Read and Write performance but twice as expensive as RAID 0- Provides fault tolerance

Does well with high sustained transfers the larger the better. Lower performance with smaller files but does allow one drive to go bad without performance hits.  Provides fault  tolerance

Hardly implemented anywhere basically the same as RAID 3 but the data strips are usually  larger because they are distributed per block instead of per byte- Still  fault tolerant. No performance hit if one drive is loss

The most popular of the 5 levels, provides good performance on reading small or random requests but does poor on large requests and  writing.  Fault tolerant but possible 50% degradation when one drive is lost.