Just select the type of RAID and the number of drives with their capacities. This tool will give you the total capacity, protection (redundancy), and fault tolerance level. For a drive of 500 GB, you can just enter 0.5 as the drive size.
Ultimate RAID Calculator
Calculate capacity, redundancy, and performance for any RAID configuration
RAID Configuration Results
Performance Estimates
RAID visualization will appear here
Recommendations
RAID Level Comparison
| RAID Level | Min Drives | Fault Tolerance | Read Performance | Write Performance | Efficiency | Best For |
|---|---|---|---|---|---|---|
| JBOD | 1 | None | Single drive | Single drive | 100% | Non-critical storage |
| RAID 0 | 2 | None | Excellent | Excellent | 100% | Performance, non-critical data |
| RAID 1 | 2 | 1 drive | Good | Fair | 50% | Small critical arrays |
| RAID 5 | 3 | 1 drive | Good | Fair | 67-94% | Balanced performance/protection |
| RAID 6 | 4 | 2 drives | Good | Poor | 50-88% | Large arrays, critical data |
| RAID 10 | 4 | 1 per mirror set | Excellent | Good | 50% | Performance + redundancy |
| RAID 50 | 6 | 1 per RAID 5 set | Very Good | Good | 67-94% | Large high-performance arrays |
| RAID 60 | 8 | 2 per RAID 6 set | Very Good | Fair | 50-88% | Very large critical arrays |
This detailed RAID calculator is really to use with simple inputs but detailed outputs to give you the right suggestions. There are multiple inputs so let's understand each one by one.
First, you choose the RAID type, which directly correlates to your requirements. If you want multiple drives working together to give you more space at a single place, you choose the RAID 0. For basic redundancy, where data is duplicated across two or more drivers, you choose the RAID 1. We have added different RAID levels from JBOS to RAID 60. You can learn about their applications and functions in this article.
The tool gives you suggestions on the minimum drives required for the selected RAID setup. You can choose the number of drives along with their size and type i.e. HDD or SSDs. The options for Hot Spares and SSD caching are also provided.
In the results, you get total usable capacity, redundancy overhead, storage efficiency, and fault tolerance. The performance estimations will be shown, but they will be the approximate values mainly impacted by the chosen type of drive. I have tried to add visualizations if that can help you understand your setup more. Finally, you get the RAID level comparison with the benefits that you get with your chosen RAID level.
I have tried to make this tool as simple yet comprehensive as possible. However, please feel free to give your suggestions for further improving this tool.
Disclaimer: We take inputs from you to give you the curated results. The tool works entirely on the front end. We do not store any of your input data anywhere.