Synology Raid Calculator
Calculate the usable storage capacity and fault tolerance for Synology NAS RAID configurations (SHR, RAID 0, 1, 5, 6, 10). Input drive sizes and number of drives to get precise results.
Published by:
isCalculator Editorial Team
Was this calculator helpful?
How to use this tool?
How to Use the Synology RAID Calculator
- Select RAID Type – Choose from SHR, RAID 0, 1, 5, 6, or 10. Each type has specific drive requirements (e.g., RAID 1 needs exactly 2 drives).
- Enter Number of Drives – Input a value between 1 and 24. The calculator will validate the minimum drives for your chosen RAID type.
- Specify Drive Sizes – Enter a comma-separated list of capacities in GB (e.g.,
4000, 4000, 4000, 4000). The number of sizes must match the number of drives. For SHR, you can mix sizes; for other RAID types, use equal sizes. - Click Calculate – The tool checks all inputs and displays:
- Usable Capacity – Total storage available after parity or mirror overhead.
- Fault Tolerance – How many drives can fail without data loss.
- Calculation Details – A brief explanation of how the result was derived.
Note: All drive sizes must be positive numbers. If you see an error, adjust your inputs accordingly.
Previous Results
| Result | Inputs | Date |
|---|
Frequently Asked Questions
We support SHR (Synology Hybrid RAID), RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10. Each has different requirements for minimum number of drives and fault tolerance.
For SHR, you can mix drive sizes; the smallest drive is used for parity. For other RAID types, it is recommended to use identical drives for optimal performance and capacity.
The calculator supports up to 24 drives. However, actual Synology models may have different limits; check your NAS specifications.
