RAID (Redundant Array of Independent Disks)

Question 1

RAID 0 - Striping

Answer 1

• File blocks are split 
between physical drives
• High performance
• No redundancy
• Minimum of 2 drives

Question 2

RAID 1 - Mirroring

Answer 2

• File blocks are duplicated 
between physical drives
• High disk space utilization
• High redundancy
• Minimum of 2 drives

Question 3

RAID 5 - Striping with Parity

Answer 3

• File blocks are striped along with a parity block
• Efficient use of disk space
• High redundancy
• Minimum of 3 drives

Question 4

RAID 1+0 - A Stripe of Mirrors

Answer 4

• Stripe file blocks across
mirrored drives
• High disk space utilization
• High redundancy
• Minimum of 4 drives