Synology vs UGREEN, QNAP, UnRAID, TrueNAS, CasaOS, Terramaster and Asustor NAS in 2025

Introduction

This tutorial provides a comprehensive overview of the current landscape of NAS (Network Attached Storage) solutions, comparing Synology with other popular brands and systems like UGREEN, QNAP, UnRAID, TrueNAS, CasaOS, Terramaster, and Asustor in 2025. Whether you're considering switching from Synology or just exploring other options, this guide will help you understand the benefits and trade-offs associated with each choice.

Step 1: Understand Synology's Strengths

• Unmatched Software (DSM): Synology's DiskStation Manager (DSM) offers a user-friendly interface and robust features, making it a preferred choice for many users.
• Pricing Consistency: Synology has maintained stable pricing for over 15 years, which can be a significant factor for budget-conscious buyers.

Step 2: Explore UGREEN as a Challenger

• Growing Popularity: UGREEN is emerging as a strong contender in the NAS market.
• User Interface: It features a UI similar to DSM, which may appeal to Synology users.
• Key Limitations: Users may find that UGREEN lacks some advanced features compared to Synology.

Step 3: Assess QNAP's Strategy

• Software Focus: In 2025, QNAP is emphasizing software stability over hardware launches.
• ZFS Adoption: They are integrating ZFS (a robust file system) into affordable 4-bay NAS devices, enhancing data integrity and management.
• App Range: QNAP has a diverse array of applications but faces lingering trust issues among users.

Step 4: Consider Asustor's Offerings

• Powerful Hardware: Asustor NAS devices boast impressive hardware options, including USB4 and ECC memory.
• Software Reliability: Their software is reliable, though it may not have as extensive an app library as competitors.
• Trade-offs: While the hardware is strong, the focus on fewer SMB-grade applications may limit functionality for some users.

Step 5: Examine TerraMaster's Innovations

• Software Progress: TerraMaster is rapidly evolving its software, offering unique tools and AI features.
• Backup Solutions: Their backup tools and air-gap integration are notable strengths.
• Potential Instability: While promising, their TOS 6 software has been reported as somewhat unstable.

Step 6: Explore DIY NAS Options

• Hardware Brands: Consider brands like AR, MinisForum, and CWWK for DIY NAS solutions.
• Flexibility: DIY setups can offer high customization but require more technical knowledge and setup time.

Step 7: Delve into UnRAID's Features

• Container Focused: UnRAID is powerful but may be intimidating for users accustomed to Synology.
• Hardware Partnerships: New partnerships, like with LinkPlus, enhance hardware support for UnRAID.
• User Transition: Synology users may find the shift to UnRAID challenging due to its different approach.

Step 8: Understand TrueNAS Complexity

• Powerful and Free: TrueNAS offers a robust, scalable NAS solution, but it comes with a steep learning curve.
• Migration Flexibility: TrueNAS allows for greater flexibility in migration compared to Synology's more rigid structure.

Conclusion

Choosing the right NAS solution depends on your specific needs and preferences. Synology remains a strong contender due to its user-friendly software and consistent pricing. However, alternatives like UGREEN, QNAP, Asustor, TerraMaster, UnRAID, and TrueNAS offer unique features that may better suit certain users. When considering a switch, it’s crucial to weigh the benefits and potential trade-offs to find the best fit for your storage needs.