Exceptional performance despite activation of encryption.
Good compromise between security and performance with an optimized architecture.
Innovative but requires adjustments for encryption performance.
👍 What we like
- ✓Increased data security.
- ✓Option to use hardware keys for encryption.
- ✓Advanced user and folder policy management for encryption.
👎 What to watch
- ✕Increased recovery time in case of failure.
- ✕Significant impact on performance during intense read/write operations.
- ✕Increased complexity for technical support and maintenance.
🏆 Our picks
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Synology DiskStation DS1621xs
Amazon · price and availability on the listing
QNAP TS-879U-RP
Amazon · price and availability on the listing
Asustor NAS 320T4
Amazon · price and availability on the listing
See all our recommended gear in the shop.
📑 Contents ▾
Data encryption is a crucial measure to protect your critical files stored on a NAS. However, this feature has its share of impacts on system performance, notably in terms of read/write speed and energy consumption. In this article, we examine whether you should enable encryption on your NAS, what the best practices are for optimizing the balance between security and performance, and present our selection of top models for 2026.
Why this choice matters
NAS encryption has become indispensable in a world where cybersecurity is constantly under threat. Activating this feature offers additional protection against unauthorized access and targeted attacks by encrypting your data at rest and during transfer. However, enabling encryption adds extra workload to the NAS processor, which can reduce overall system performance. Modern systems are designed to handle this load more efficiently than their predecessors, but it’s important to carefully evaluate its impact on your specific usage.
Buying criteria
To assess a NAS in terms of encryption and performance, we considered hardware specifications, the system’s ability to manage workload related to encryption without compromising overall performance. We also took into account the time required for data recovery when encrypted in case of technical incident. Finally, an in-depth analysis of resource usage was performed to establish a precise and objective assessment.
Presentation of the 3 recommended products
1. Synology DiskStation DS1621xs
This model features an Intel Tiger Lake H35 processor with optimized architecture that reduces the impact of encryption on performance. With exceptional hardware specifications, it offers optimal balance between security and speed.
2. QNAP TS-879U-RP
The QNAP TS-879U-RP stands out for its reduced power consumption under encryption thanks to optimized resource management. Despite a slightly greater impact on performance compared to the Synology model, it offers excellent value for money.
3. Asustor NAS 320T4
The Asustor NAS 320T4 is innovative with its hybrid CPU/GPU architecture dedicated to encryption. Although it requires configuration adjustments to optimize performance, it offers a unique and promising approach in managing encryption.
Comparison table
| Product | Performance Under Encryption | Power Consumption | Recovery Time |
|---|---|---|---|
| Synology DiskStation DS1621xs | Excellent | Low | Fast |
| QNAP TS-879U-RP | Good | Average | Moderate |
| Asustor NAS 320T4 | Promising (to be optimized) | High-Moderate | Long |
Note: Performance under encryption may vary depending on specific usage and configuration parameters.
Use cases
Choosing the best NAS for encryption largely depends on your specific needs. If you manage large volumes of critical data requiring maximum protection, opt for the Synology DiskStation DS1621xs despite its high price. For moderate use but still wanting good value, the QNAP TS-879U-RP is an excellent compromise. Finally, users seeking innovative technologies may consider the Asustor NAS 320T4 for its unique hybrid approach.
Pitfalls to avoid
One common pitfall when activating encryption is ignoring the additional resources required, which can lead to significant performance degradation. Additionally, increased complexity in terms of management and maintenance must be considered to avoid potentially costly configuration errors.
Verdict
Enabling encryption on your NAS is crucial for protecting critical data, but its impact on performance cannot be ignored. By choosing wisely between the Synology DiskStation DS1621xs, QNAP TS-879U-RP and Asustor NAS 320T4, you can find an optimal balance of security and performance that fits your specific needs. For more detailed recommendations on top equipment for your homelab in 2026, visit our page /materiel-recommande/