Combination of RAID 0 (data striping) and RAID 1 (mirroring)

Drive 1
Drive 2
Drive 3
Drive 4
Data A
Data A
mA
mA
Data B
Data B
mB
mB
Data C
Data C
mC
mC
Original Data
Mirrored Data

Minimum Number of Drives: 4
Strengths: Highest performance, highest data protection (can tolerate multiple drive failures).
Weaknesses: High redundancy cost overhead; Because all data is duplicated, twice the storage capacity is required; Requires minimum of four drives.