RAID Calculator
Calculate RAID array capacity, performance, fault tolerance, and cost
RAID Configuration
High performance, no fault tolerance
Size of each individual disk in the array
Minimum: 2 disks
Cost calculation for total investment and cost per usable TB
Capacity Statistics
Performance & Fault Tolerance
Fault Tolerance: No fault tolerance - any disk failure causes total data loss
Cost Analysis
RAID Level Comparison
⚡ RAID 0 - Performance
Pros: Maximum performance
Cons: No fault tolerance
Use case: Gaming, temporary storage
🔄 RAID 1 - Reliability
Pros: High fault tolerance
Cons: 50% capacity utilization
Use case: Critical data storage
⚖️ RAID 5 - Balanced
Pros: Good balance of all factors
Cons: Slow rebuild times
Use case: General purpose servers
🛡️ RAID 6 - High Reliability
Pros: Survives 2 disk failures
Cons: Lower write performance
Use case: Large storage arrays
RAID Quick Reference
Important Notes
RAID is not a backup! Always maintain separate backups
Consider hot spare drives for critical systems
Rebuild times increase with larger drives
Factor in RAID controller costs
Understanding RAID Technology
What is RAID?
RAID (Redundant Array of Independent/Inexpensive Disks) is a technology that combines multiple physical disk drives into a single logical unit to provide redundancy, improve performance, or both. Different RAID levels offer various trade-offs between storage capacity, fault tolerance, and performance.
Key Benefits
- •Improved data reliability and fault tolerance
- •Enhanced read/write performance
- •Better storage utilization
- •Hot-swappable drive replacement
Capacity Calculations
RAID 0: Total = Sum of all disks
RAID 1: Usable = Smallest disk size
RAID 5: Usable = (n-1) × disk size
RAID 6: Usable = (n-2) × disk size
RAID 10: Usable = Total capacity / 2
Performance Note: Actual performance depends on workload patterns, hardware configuration, and RAID controller capabilities.
Choosing the Right RAID Level
High Performance Needs
Choose RAID 0 for maximum speed, or RAID 10 for performance with redundancy.
Balanced Requirements
RAID 5 offers good balance of capacity, performance, and fault tolerance.
Maximum Reliability
RAID 6 or RAID 10 provide the highest levels of fault tolerance.