RAID (Redundant Array of Independent Disks)

  Description Minimum #
of Drives
Benefits
RAID 0 Data Striping 2 Highest Performance
without data protection
RAID 1 Disk Mirroring 2 Data Protection through
100% data duplication
RAID 1/0 Mirroring and
Data Striping
4 Highest Performance
with Data Protection
RAID 5 Data Striping with
Rotating Parity
3 Highest Performance
with Data Protection

For more detail about RAID, click here