RAID Performance Calculator
Compare read/write speed and IOPS for RAID 0, 1, 5, 6 and 10. Free online calculator for NAS and server arrays.
RAID Performance Characteristics
RAID 0
Maximum performance with no redundancy. Read and write speeds scale with the number of disks.
RAID 1
Good read performance with write performance similar to a single disk. Provides redundancy.
RAID 5/6
Good read performance with moderate write performance. Provides redundancy with parity.
Quick Examples
RAID 0 with 4 NVMe (3500 MB/s, 50000 IOPS)
- Read Speed: 14000 MB/s
- Write Speed: 14000 MB/s
- Read IOPS: 200,000
- Write IOPS: 200,000
RAID 5 with 6 HDD (200 MB/s, 150 IOPS)
- Read Speed: 1000 MB/s
- Write Speed: 250 MB/s
- Read IOPS: 750
- Write IOPS: 188
About This Tool
The RAID Performance Calculator is a powerful tool for optimizing storage system performance. It provides accurate estimates for read and write speeds across different RAID configurations, helping you make informed decisions about your storage architecture.
Key Features:
- Real-time performance calculations for all major RAID levels
- Support for RAID 0, 1, 5, 6, and 10 configurations
- Scalable calculations based on disk count and specifications
- Performance optimization recommendations
Perfect for: System administrators designing storage solutions, IT professionals planning RAID deployments, hardware enthusiasts optimizing performance, and businesses evaluating storage options.
How it helps you:
- Performance Planning: Predict throughput before purchasing hardware
- Configuration Comparison: Compare different RAID levels side-by-side
- Capacity Planning: Determine optimal disk count for target performance
- Cost Analysis: Balance performance needs with budget constraints
- Bottleneck Identification: Identify performance limitations early
- Upgrade Planning: Evaluate performance gains from hardware upgrades
Technical Considerations:
Our calculator uses industry-standard RAID performance formulas accounting for striping, mirroring, and parity overhead. Results represent theoretical maximums under optimal conditions and may vary based on controller quality, cache configuration, and workload patterns.
Frequently Asked Questions
What factors affect RAID performance?
RAID level, disk count, individual disk speed, controller quality, and workload type all impact performance.
Which RAID level is fastest?
RAID 0 offers highest performance with no redundancy. RAID 10 provides excellent performance with fault tolerance.
How does RAID affect read vs write?
Read performance scales well with most RAID levels. Write performance varies: RAID 0 scales linearly, RAID 5/6 have parity overhead.
Why differ from real performance?
Controller efficiency, cache algorithms, fragmentation, and system load affect real-world performance.
RAID 5 vs RAID 6 difference?
RAID 5 uses single parity (1 disk failure). RAID 6 uses double parity (2 disk failures) with slightly lower write performance.
Minimum disks required?
RAID 0/1: 2 disks minimum. RAID 5: 3 disks. RAID 6: 4 disks. RAID 10: 4 disks (even numbers preferred).
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