Synology Storage Calculator

Choosing the right storage setup for your Network Attached Storage (NAS) system is essential for performance, data protection, and future scalability. Whether you're a home user, photographer, business owner, or IT administrator, the Synology Storage Calculator makes storage planning simple and accurate.

Instead of guessing how much usable storage you'll have after configuring RAID, the calculator helps estimate available capacity based on drive size, RAID type, and the number of disks. This ensures you purchase the right drives while avoiding unnecessary expenses.

In this guide, we'll explain what the Synology Storage Calculator is, how to use it, its key features, benefits, and answer the most common questions users have.

What Is the Synology Storage Calculator?

The Synology Storage Calculator is a free online tool designed to help users estimate the usable storage capacity of Synology NAS devices. It calculates available storage based on the number of hard drives or SSDs, disk sizes, and RAID configuration.

The calculator supports various RAID levels, including:

• Synology Hybrid RAID (SHR)
• SHR-2
• RAID 0
• RAID 1
• RAID 5
• RAID 6
• RAID 10

This tool eliminates guesswork and helps users design an efficient storage system before purchasing hardware.

Why Use the Synology Storage Calculator?

Storage planning isn't as simple as adding the capacity of multiple drives together. RAID configurations reserve space for redundancy and fault tolerance, reducing usable capacity.

Using the Synology Storage Calculator helps you:

• Estimate usable storage accurately.
• Compare different RAID options.
• Plan future storage expansion.
• Avoid buying unnecessary drives.
• Understand fault tolerance before deployment.
• Save time and money.

Whether you're storing family photos or running business applications, accurate storage planning is essential.

How to Use the Synology Storage Calculator

Using the calculator is straightforward.

Step 1: Select the Number of Drives

Choose how many HDDs or SSDs your Synology NAS will contain.

Step 2: Choose Drive Capacity

Select the size of each drive, such as:

• 2 TB
• 4 TB
• 8 TB
• 12 TB
• 16 TB
• 20 TB

You can also mix different drive sizes when supported.

Step 3: Select RAID Type

Choose your preferred RAID configuration depending on your storage and redundancy requirements.

Common choices include:

• SHR for flexibility
• RAID 5 for balanced storage
• RAID 6 for additional protection
• RAID 10 for performance

Step 4: View Storage Results

The calculator instantly displays:

• Total raw capacity
• Estimated usable capacity
• Reserved space for redundancy
• Fault tolerance information

Step 5: Compare Different Configurations

Experiment with different disk sizes and RAID options to find the best balance between capacity and data protection.

Key Features of the Synology Storage Calculator

The calculator offers several powerful features.

Accurate Capacity Estimates

Provides realistic storage calculations based on RAID overhead.

Supports Multiple RAID Types

Compatible with SHR, SHR-2, RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10.

Mixed Drive Support

Helps estimate storage when different-sized drives are used.

Instant Results

Calculations update immediately without requiring downloads.

User-Friendly Interface

Simple enough for beginners while providing valuable insights for professionals.

Free to Use

No registration or subscription is required.

Helps Prevent Costly Mistakes

Plan your NAS storage before purchasing expensive hard drives.

Benefits of Using the Synology Storage Calculator

Using this tool offers several advantages.

• Better storage planning
• Reduced hardware costs
• Improved RAID understanding
• Easier NAS upgrades
• Increased data protection awareness
• Time-saving calculations
• Better purchasing decisions
• Suitable for home and business users

Tips for Better Storage Planning

To get the best results:

• Always leave room for future expansion.
• Choose RAID based on your priorities.
• Use identical drives whenever possible.
• Remember that RAID is not a backup.
• Consider workload requirements before selecting RAID.
• Monitor storage usage regularly.

20 Frequently Asked Questions (FAQs)

1. What is the Synology Storage Calculator?

It is an online tool that estimates usable storage for Synology NAS devices.

2. Is the Synology Storage Calculator free?

Yes, it is completely free.

3. Does it support Synology Hybrid RAID (SHR)?

Yes, SHR and SHR-2 are fully supported.

4. Can I calculate RAID 5 capacity?

Yes, RAID 5 calculations are available.

5. Does it support RAID 6?

Yes.

6. Can I use different-sized drives?

Yes, especially when using SHR.

7. Does the calculator predict performance?

No. It estimates storage capacity only.

8. Can businesses use it?

Absolutely. It is suitable for both personal and business deployments.

9. Does RAID replace backups?

No. RAID protects against drive failure but does not replace backups.

10. Is internet access required?

Yes, for the online calculator.

11. Can SSDs be used?

Yes, SSD configurations are supported.

12. Is the storage estimate exact?

It is an accurate estimate, though actual usable space may vary slightly due to formatting.

13. Does it support future storage expansion?

Yes, users can simulate expanded configurations.

14. Which RAID offers the best balance?

RAID 5 and SHR are popular choices for balancing capacity and redundancy.

15. Is RAID 0 recommended?

Only when redundancy is not required because it offers no fault tolerance.

16. Can beginners use the calculator?

Yes. Its interface is beginner-friendly.

17. Why is usable capacity lower than raw capacity?

Some storage is reserved for redundancy and system overhead.

18. Can I compare multiple RAID types?

Yes. You can easily switch between configurations.

19. Is it useful before buying hard drives?

Yes. It helps avoid purchasing unnecessary storage.

20. Who should use the Synology Storage Calculator?

Home users, photographers, video editors, businesses, IT professionals, and anyone planning a Synology NAS.

Conclusion

The Synology Storage Calculator is an essential planning tool for anyone deploying or upgrading a Synology NAS. It simplifies RAID calculations, estimates usable storage, and helps users make informed purchasing decisions before investing in drives.