RAID Calculator
Capacity, Performance & Fault Tolerance Analysis
Understanding RAID Levels & Performance
Choosing the right RAID level depends on whether your project prioritizes speed or data safety. Below is a detailed guide on the performance and requirements of popular RAID configurations:
RAID 0 (Striping)
Performance: Offers the highest R/W speeds.
Security: Zero fault tolerance. One disk failure results in total data loss.
Min Disks: 2
RAID 1 (Mirroring)
Performance: Write speed equals a single disk, but read speed can scale with disk count.
Security: System survives one disk failure.
Min Disks: 2
RAID 5 (Striping with Parity)
Performance: Good read speed, moderate write speed (due to parity overhead).
Security: Tolerates 1 disk failure.
Min Disks: 3
RAID 6 (Double Parity)
Performance: Solid read speed, but write speed is lower than RAID 5 due to double parity.
Security: Tolerates up to 2 simultaneous disk failures.
Min Disks: 4
RAID 10 (1+0)
Performance: Excellent R/W performance. Ideal for databases.
Security: Tolerates one failure per mirrored pair.
Min Disks: 4
RAID 50/60 (Nested RAID)
Performance: Used in enterprise data centers for high capacity and speed balance.
Security: RAID 50 tolerates 1 per group, RAID 60 tolerates 2 per group.
Min Disks: 6/8