Synology SNV5420-400G 400GB M.2 NVMe SSD for Enterprise NAS Caching
The Synology SNV5420-400G is a high-performance 400GB M.2 2280 NVMe SSD engineered specifically for demanding 24/7 caching workloads in Synology NAS systems. With sustained sequential read speeds up to 3,000 MB/s and write speeds up to 650 MB/s, plus exceptional random IOPS performance, this enterprise-grade SSD accelerates access to frequently used data, making it ideal for file servers, virtualization environments, databases, and content creation workflows. Designed for seamless integration with Synology DiskStation Manager (DSM), the SNV5420-400G offers automatic firmware updates, lifetime analytics, and full end-to-end data protection including power loss protection.
Why Choose the Synology SNV5420-400G?
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Exceptional Performance: Up to 660,000 random read IOPS and 120,000 random write IOPS for lightning-fast data access in high-concurrency scenarios
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Enterprise-Grade Endurance: Rated for over 700TB TBW (terabytes written) with a 3 million hour MTBF, ensuring long-term reliability in 24/7 operations
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Power Loss Protection: Built-in capacitors safeguard cached data during unexpected shutdowns, preventing data loss and corruption
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DSM Integration: Automatic firmware updates and lifetime analytics through Synology DSM for effortless management and performance monitoring
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5-Year Warranty: Backed by Synology's comprehensive 5-year limited warranty for peace of mind
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Validated Compatibility: Rigorously tested for use in Synology NAS systems after every engineering change
Accelerate Your NAS Performance
The SNV5420-400G transforms your Synology NAS by enabling SSD caching that stores frequently accessed data on ultra-fast NVMe storage. This dramatically improves random I/O performance, reducing latency by up to 93% and delivering up to 15x higher IOPS compared to traditional hard drives. Whether you're running databases, virtual machines, photo libraries, or high-performance file servers, this SSD ensures your most critical data is accessed at lightning speed without taking up valuable 3.5-inch drive bays.
Built for Demanding Enterprise Workloads
Designed for high-concurrency 24/7 environments, the SNV5420-400G delivers sustained I/O performance that remains consistent across its lifespan. The drive features NVMe PCIe 3.0 x4 interface in a compact M.2 2280 form factor, making it perfect for space-constrained NAS deployments. With operating temperatures from 0°C to 85°C and compliance with international standards including FCC, CE, RoHS, and UKCA, this SSD meets the rigorous demands of professional storage environments.
End-to-End Data Protection
The SNV5420-400G offers full end-to-end data protection across the entire transfer path. Power loss protection circuitry with dedicated capacitors ensures that data-in-flight is safely written to NAND flash memory during power failures, while firmware-level error correction maintains data integrity under heavy workloads. Combined with DSM's lifetime analytics, you can monitor SSD health, track usage patterns, and optimize performance to maximize the lifespan of each drive.
Seamless Synology Ecosystem Integration
Unlike generic M.2 drives, the SNV5420-400G is purpose-built for Synology systems with validated interoperability and automatic firmware updates delivered through DSM. This tight integration eliminates compatibility concerns and simplifies maintenance, allowing you to deploy with confidence. The drive undergoes extensive I/O stress testing, power cycling, and temperature qualification to ensure it meets Synology's standards for stability and reliability.
Ideal Use Cases
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SSD Caching for NAS: Accelerate HDD volume performance for file servers, backup systems, and general-purpose storage
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Database Storage: Reduce query latency and improve transaction throughput for SQL, NoSQL, and business-critical databases
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Virtualization: Speed up VM boot times, improve snapshot performance, and reduce storage bottlenecks in ESXi, Hyper-V, or Proxmox environments
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Content Creation: Accelerate access to large photo libraries, video editing projects, and creative asset repositories
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Containerized Workloads: Improve performance for Docker, Kubernetes, and containerized application deployments
What's in the Box
- 1 × Synology SNV5420-400G M.2 NVMe SSD
- Quick Installation Guide
Full Specifications
Storage
| Capacity |
400 GB |
| Form Factor |
M.2 2280 (single-sided) |
| Interface |
NVMe PCIe 3.0 x4 |
Performance
| Sequential Read (128KB, QD32) |
Up to 3,000 MB/s |
| Sequential Write (128KB, QD32) |
Up to 650 MB/s |
| Random Read (4KB, QD256) |
Up to 225,000 IOPS |
| Random Write (4KB, QD256) |
Up to 45,000 IOPS |
| Sustained Random Read (4KB, QD32) |
Up to 400,000 IOPS |
| Sustained Random Write (4KB, QD32) |
Up to 70,000 IOPS |
Endurance & Reliability
| Terabytes Written (TBW) |
> 700 TB |
| Mean Time Between Failures (MTBF) |
3,000,000 hours |
| Uncorrectable Bit Error Rate (UBER) |
< 1 sector per 1017 bits read |
| Power Loss Protection |
Yes (capacitor-based) |
| Warranty |
5-year limited warranty |
Power
| Supply Voltage |
3.3 V (± 5%) |
| Active Read (Typical) |
5.0 W |
| Active Write (Typical) |
5.5 W |
| Idle |
2.5 W |
Environmental
| Operating Temperature |
0°C to 85°C (32°F to 185°F) |
| Storage Temperature |
-40°C to 85°C (-40°F to 185°F) |
Physical
| Dimensions (H × W × D) |
3.5 mm × 22 mm × 80 mm |
| Weight |
Approximately 0.04 kg (0.09 lbs) |
Certifications
| Compliance Standards |
BSMI, EAC, FCC, KC, RoHS, UKCA, UL, VCCI |
Specifications are sourced from the manufacturer product page and may be updated. Performance results may vary according to the host system's hardware and software configuration.
