400 GB enterprise NVMe cache SSD
Synology SNV3400-400G 400 GB NVMe SSD
The Synology SNV3400-400G is a 400 GB M.2 2280 NVMe PCIe 3.0 x4 enterprise SSD designed for demanding cache workloads in compatible Synology systems, with sustained read performance up to 3,100 MB/s and endurance rated at 500.
- Capacity
- 400 GB
- Form factor
- M.2 2280
- Sequential read
- 3,100 MB/s
- Endurance
- 500 TBW
Purpose-built NVMe caching for responsive Synology storage
The Synology SNV3400-400G is engineered for sustained cache activity in multi-user environments. Its controlled firmware, DSM-integrated lifetime analytics and verified Synology deployment options help administrators monitor drive health and plan maintenance while improving access to frequently requested data.
Sustained cache performance
SNV3400-400G is rated for sustained sequential reads up to 3,100 MB/s and writes up to 550 MB/s.
Responsive random I/O
Sustained random performance is rated up to 205,000 IOPS read and 40,000 IOPS write.
Enterprise endurance
500 TBW supports intensive cache workloads, subject to the official workload and warranty conditions.
DSM lifetime analytics
Supported Synology systems can use workload-based lifetime information to help plan SSD maintenance and replacement.
Space-efficient deployment
Compact M.2 2280 form factor provides NVMe caching without occupying a 3.5-inch drive bay in a compatible system.
Validated for Synology
Synology controls firmware and validates supported deployment paths for a more consistent storage experience.
Who is the Synology SNV3400-400G best for?
A strong choice for
- Compatible Synology systems requiring a M.2 2280 cache SSD
- Multi-user environments with frequently accessed data
- Administrators wanting DSM-integrated SSD lifetime analytics
- Deployments needing 400 GB of dedicated NVMe cache capacity
- Workloads suited to the stated sustained I/O profile
Consider another model if you need
- Your Synology model or adapter does not support M.2 2280
- You need a general-purpose portable or desktop SSD
- You require more than 400 GB per drive
- Your deployment specifically requires onboard power-loss protection
Key specifications
- Model
- SNV3400-400G
- Capacity
- 400 GB
- Form factor
- M.2 2280
- Interface
- NVMe PCIe 3.0 x4
- Sequential read
- 3,100 MB/s
- Sequential write
- 550 MB/s
- Random read
- 205,000 IOPS
- Random write
- 40,000 IOPS
- Endurance
- 500 TBW
- Warranty
- 5 years or stated endurance limit, whichever comes first
Full technical specifications
Performance and endurance
| Model | SNV3400-400G |
|---|---|
| Capacity | 400 GB |
| Form factor | M.2 2280 |
| Interface | NVMe PCIe 3.0 x4 |
| Sustained sequential read (128 KB, QD32) | 3,100 MB/s |
| Sustained sequential write (128 KB, QD32) | 550 MB/s |
| Sustained random read (4 KB, QD256) | 205,000 IOPS |
| Sustained random write (4 KB, QD256) | 40,000 IOPS |
| Terabytes written (TBW) | 500 |
| Mean time between failures (MTBF) | 1.8 million hours |
| Uncorrectable bit error rate (UBER) | <1 sector per 1017 bits read |
| Power-loss protection | Not specified |
| Warranty | 5 years; coverage ends when the warranty period or stated endurance usage is reached, whichever comes first |
Power, temperature and physical
| Supply voltage | 3.3 V (±5%) |
|---|---|
| Active read (typical) | 3.2 W |
| Active write (typical) | 3.2 W |
| Idle | 2.0 W |
| Operating temperature | 0°C to 70°C (32°F to 158°F) |
| Storage temperature | -40°C to 85°C (-40°F to 185°F) |
| Dimensions | 3.5 × 22 × 80 mm |
| Certifications | FCC, CE, EAC, BSMI, VCCI, RCM, KC and RoHS |
Verified Synology deployment paths
| Deployment options | M.2 SSD via M2D18, M.2 SSD via M2D20, M.2 SSD via E10M20-T1, M.2 SSD via internal slot |
|---|---|
| Compatibility requirement | Confirm the exact Synology system, adapter and DSM support in Synology's current compatibility list before installation |
Frequently asked questions about the Synology SNV3400-400G
What is the Synology SNV3400-400G?
It is a 400 GB M.2 2280 NVMe PCIe 3.0 x4 SSD designed for cache workloads in compatible Synology systems.
What capacity does the SNV3400-400G provide?
The SNV3400-400G provides 400 GB of SSD capacity.
What form factor is the SNV3400-400G?
It uses the M.2 2280 form factor; verify that the target internal slot or adapter accepts this length.
How fast is the SNV3400-400G?
Synology rates it for sustained sequential reads up to 3,100 MB/s and writes up to 550 MB/s under the stated test conditions.
What random performance does the SNV3400-400G provide?
It is rated up to 205,000 IOPS sustained random read and 40,000 IOPS sustained random write.
What is the endurance rating of the SNV3400-400G?
Synology specifies 500 TBW based on the JESD219A enterprise workload.
Does the SNV3400-400G include power-loss protection?
Power-loss protection is not specified for the SNV3400-400G in its official product specification.
Does the SNV3400-400G integrate with DSM?
Yes, on supported Synology systems. The SNV3000 family supports DSM lifetime analytics and managed firmware workflows subject to the applicable DSM version.
Which Synology systems support the SNV3400-400G?
Compatibility is model-specific. Check Synology's current compatibility list and confirm the required internal slot or adapter before purchase.
What warranty applies to the SNV3400-400G?
Synology specifies a five-year limited warranty, ending earlier if the stated endurance usage is reached.
- Performance figures are sustained single-drive results from Synology testing; actual performance varies with host hardware, software and configuration.
- Endurance is based on the JESD219A enterprise workload.
- Confirm exact NAS, adapter and DSM compatibility before purchase.
- Warranty coverage ends when the warranty period or stated endurance usage is reached, whichever comes first.
