RAID = Redundant Array of Independant (or Inexpensive) Disks.
? Lvl 0: Provides data striping (spreading files out across multiple disks) but without any redundancy. This improves performance but does not deliver any fault tolerance.
? Lvl 1: Provides disk mirroring, where data is written to multiple disks, thus if one disk fails the system can instantly switch.
? Lvl 3: Same as Level 0, also uses one dedicated disk for error correction data. It provides good performance and a low level of fault tolerance
? Lvl 5: Provides data striping at the byte level and stripe error correction information. This provides excellent performance and high fault tolerance.
Thorin