Exceptional performance and reliability
Good balance between price and functionality
State-of-the-art technology and flexibility
👍 What we like
- ✓Exceptional performance for intensive workloads
- ✓Advanced features such as continuous file checking
- ✓Integration with a wide range of applications and services
👎 What to watch
- ✕Increased complexity in system administration
- ✕Not part of the mainline Linux kernel (ZFS)
- ✕Requires more hardware resources to run efficiently
🏆 Our picks
Affiliate links · same price for you
Synology RS217RP+
Amazon · price and availability on the listing
Asus QNAP NAS Pro 4
Amazon · price and availability on the listing
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📑 Contents ▾
Choosing the right file system is crucial for the performance and reliability of your NAS. In 2026, three options dominate: ZFS, Btrfs, and ext4. Each has its specific advantages and disadvantages that can greatly influence performance, administration, and costs associated with your storage operating system.
Why this choice matters
The selection of a file system for your NAS in 2026 largely depends on your specific needs and expectations regarding performance, reliability, and functionality. ZFS offers robust protection against software errors through its continuous file checking mechanism, copy-on-write, snapshots and self-healing of corrupted data when the pool has redundancy. Btrfs also offers copy-on-write, checksums, subvolumes and snapshots. Finally, ext4 remains a robust option despite its age, with stable performance and optimal integration in many commonly used operating systems.
Buying criteria
Reliability : ZFS offers the best protection against hardware errors. Performance : Btrfs is balanced for a compromise between speed and resource management. Ease of use : ext4 remains the easiest to administer for beginners.
These criteria are essential in choosing the file system that will best meet your specific NAS needs, whether it be maximum performance or ease of use.
Presentation of the 3 recommended products
1. QNAP TS-853BU-RP
The QNAP TS-853BU-RP is an exceptional choice for users seeking top-notch performance and reliability. It runs QTS (ext4 file system) and does not offer ZFS; for ZFS on QNAP, a QuTS hero-compatible model is required (see the manufacturer’s spec sheet).
2. Synology RS217RP+
The Synology RS217RP+ is an excellent compromise for those looking to balance performance and cost. Check the manufacturer’s spec sheet for Btrfs and SSD cache support.
3. Asus QNAP NAS Pro 4
The Asus QNAP NAS Pro 4 is designed for users who want to push technology to its limits. Check the manufacturer’s spec sheet for the file system and features actually supported.
Comparison table
| Product | Energy Consumption | Price (€) | Performance (MB/s) |
|---|---|---|---|
| QNAP TS-853BU-RP | see spec sheet | see live price | see spec sheet |
| Synology RS217RP+ | see spec sheet | see live price | see spec sheet |
| Asus QNAP NAS Pro 4 | see spec sheet | see live price | see spec sheet |
| Note: Prices may vary by region and promotions. |
Use cases
The QNAP TS-853BU-RP is ideal for professional users requiring high availability and optimal performance. The Synology RS217RP+ fits home or small-scale environments seeking a good balance between cost and functionality. Finally, the Asus QNAP NAS Pro 4 is the perfect choice for tech enthusiasts looking to leverage cutting-edge storage technologies.
Pitfalls to avoid
Avoid using file systems that do not meet your specific needs. For example, ext4 offers neither data checksums nor native snapshots. Similarly, Btrfs might not offer enough features for professional users seeking maximum reliability and optimal performance.
Verdict
In conclusion, the choice between ZFS, Btrfs, and ext4 largely depends on your specific needs. For optimal performance and high availability, opt for ZFS; the QNAP TS-853BU-RP itself runs QTS (ext4). If you’re looking for a balanced compromise in terms of price and functionality, the Synology RS217RP+ is the ideal option. Finally, users seeking to push technology to its limits should consider the Asus QNAP NAS Pro 4.
Visit our dedicated page on recommended hardware to discover other options and personalized advice.