Synology Hybrid Raid Calculator

Synology Hybrid RAID Calculator

Calculating storage…
Total Raw Capacity
Usable Capacity
Fault Tolerance

Managing storage for a network-attached storage (NAS) system can be challenging, especially when you want to maximize capacity while ensuring data protection. The Synology Hybrid RAID (SHR) Calculator is a user-friendly tool designed to help you quickly determine the storage capacity and fault tolerance of your NAS drives without complex calculations.

Whether you are a home user setting up a small NAS or an IT professional managing enterprise storage, this calculator simplifies decision-making and ensures you make informed choices for your data.

What is the SHR Calculator and Why You Need It

The SHR Calculator is specifically designed for Synology NAS systems, which use Synology Hybrid RAID technology. SHR automatically optimizes the storage configuration, allowing for flexible drive sizes while providing fault tolerance.

Key purposes of the SHR Calculator include:

  • Calculating total raw storage based on the number of drives and their size.
  • Determining usable capacity depending on the SHR RAID type selected.
  • Showing fault tolerance, i.e., how many drives can fail without losing data.

By using this tool, you avoid overestimating storage, prevent data loss, and plan your NAS expansion efficiently.

Step-by-Step Guide: How to Use the SHR Calculator

Using the SHR Calculator is straightforward. Follow these steps:

  1. Enter the Number of Drives
    • Input the total number of drives in your NAS system.
    • Example: If your NAS has 4 drives, enter 4.
  2. Input Drive Size (GB)
    • Specify the storage size of each drive in gigabytes (GB).
    • Example: If each drive is 1 TB (1000 GB), enter 1000.
  3. Select RAID Type
    • Choose between SHR (1 Disk Fault Tolerance) or SHR-2 (2 Disk Fault Tolerance).
    • SHR protects your data against one drive failure, while SHR-2 offers protection against two.
  4. Click “Calculate”
    • The tool will display a progress bar while computing your storage details.
  5. View Results
    • Total Raw Capacity: Sum of all drives before RAID overhead.
    • Usable Capacity: Storage available for data after RAID configuration.
    • Fault Tolerance: Number of drives that can fail without data loss.
  6. Optional: Copy or Share Results
    • Use the “Copy Results” button to save details to your clipboard.
    • Use “Share” to send results directly via supported sharing platforms.

Practical Example of SHR Calculation

Imagine you have a NAS with 5 drives, each of 2 TB, and you want to use SHR-2 for maximum protection.

  1. Number of Drives: 5
  2. Drive Size: 2000 GB
  3. RAID Type: SHR-2

Calculation:

  • Total Raw Capacity: 5 × 2000 = 10,000 GB
  • Usable Capacity: (5 − 2) × 2000 = 6,000 GB
  • Fault Tolerance: Can withstand 2 drive failures without losing data

This shows that you can safely store 6 TB of data while being protected against any two drive failures.

Benefits of Using the SHR Calculator

  1. Time-Saving – Instantly calculates storage capacity and fault tolerance.
  2. Accuracy – Eliminates errors from manual RAID calculations.
  3. Data Protection Awareness – Helps plan fault tolerance levels to avoid data loss.
  4. Future Planning – Supports NAS expansion by testing various drive numbers and sizes.
  5. User-Friendly Interface – Clear, step-by-step input fields and progress display.

Key Features

  • Supports both SHR and SHR-2 RAID configurations.
  • Displays Total Raw Capacity and Usable Capacity in GB.
  • Shows Fault Tolerance to prevent data loss.
  • Offers Copy and Share functionality for easy reporting.
  • Includes a progress bar for a visually interactive experience.

Use Cases

  • Home NAS Setup: Quickly determine storage for personal media libraries.
  • Small Businesses: Plan backup and storage capacity for office documents.
  • IT Professionals: Model different RAID setups for enterprise NAS systems.
  • NAS Expansion Planning: Simulate adding drives and different RAID types before purchase.

Tips for Maximizing SHR Calculator Use

  • Always round drive sizes consistently to avoid confusion in GB vs TB.
  • Use SHR-2 for critical data to protect against multiple drive failures.
  • Check your NAS hardware limits before planning maximum drive usage.
  • Test multiple configurations to find the perfect balance of storage and protection.

Frequently Asked Questions (FAQ)

1. What is SHR?
SHR stands for Synology Hybrid RAID, a flexible RAID system that optimizes storage and provides fault tolerance.

2. What’s the difference between SHR and SHR-2?
SHR protects against one drive failure, while SHR-2 protects against two drives failing simultaneously.

3. Can I use drives of different sizes?
Yes, SHR automatically maximizes storage even with mixed drive sizes.

4. How do I know the usable capacity?
The calculator shows the usable capacity after RAID overhead is applied.

5. Can I expand my NAS later?
Yes, SHR allows adding drives without reformatting the entire array.

6. Is the calculator accurate?
Yes, it’s designed based on SHR formulas used by Synology NAS systems.

7. Do I need an active internet connection to use it?
No, the calculator works locally in your browser.

8. Can I share results with my team?
Yes, the “Share” button enables easy sharing via supported platforms.

9. How do I copy the results?
Click the “Copy Results” button to save the output to your clipboard.

10. Can I use the calculator for enterprise NAS?
Yes, it works for both home and enterprise setups.

11. What happens if I input an invalid number?
The calculator defaults invalid entries to zero to prevent errors.

12. Can I reset the inputs?
Yes, click the “Reset” button to clear all fields.

13. Is it compatible with all browsers?
Yes, modern browsers like Chrome, Firefox, and Edge support it.

14. Does it require Synology hardware to use?
No, you can simulate SHR setups even without a physical NAS.

15. Can I calculate multiple RAID types at once?
Yes, but you need to select one type at a time.

16. Does the calculator include system-reserved space?
No, it calculates raw and usable capacity only.

17. Can SHR handle drive failures without data loss?
Yes, depending on whether you choose SHR or SHR-2.

18. What’s the minimum number of drives for SHR?
SHR requires at least 2 drives, SHR-2 requires at least 3.

19. Is SHR more efficient than traditional RAID?
Yes, it maximizes storage, especially with drives of different sizes.

20. Can I plan my NAS upgrade with this calculator?
Absolutely, it helps visualize capacity and fault tolerance before purchase.

The Synology Hybrid RAID Calculator is a must-have tool for anyone managing NAS storage. Its intuitive interface, fast calculations, and fault tolerance insights allow users to optimize storage safely, plan expansions, and ensure data protection. Whether for personal or business use, it removes the guesswork from RAID planning.