400 GB enterprise NVMe cache SSD
Synology SNV3500-400G 400 GB NVMe SSD
The Synology SNV3500-400G is a 400 GB M.2 22110 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 22110
- Sequential read
- 3,100 MB/s
- Endurance
- 500 TBW
Purpose-built NVMe caching for responsive Synology storage
The Synology SNV3500-400G 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
SNV3500-400G 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.
Power-loss protection
Integrated power-loss protection helps safeguard in-flight data during an unexpected loss of power.
Validated for Synology
Synology controls firmware and validates supported deployment paths for a more consistent storage experience.
Who is the Synology SNV3500-400G best for?
A strong choice for
- Compatible Synology systems requiring a M.2 22110 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 22110
- You need a general-purpose portable or desktop SSD
- You require more than 400 GB per drive
- You need a different physical M.2 length
Key specifications
- Model
- SNV3500-400G
- Capacity
- 400 GB
- Form factor
- M.2 22110
- 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 | SNV3500-400G |
|---|---|
| Capacity | 400 GB |
| Form factor | M.2 22110 |
| 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 | Supported |
| 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) | 3.7 W |
| Active write (typical) | 3.4 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 | 4.5 × 22 × 110 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 SNV3500-400G
What is the Synology SNV3500-400G?
It is a 400 GB M.2 22110 NVMe PCIe 3.0 x4 SSD designed for cache workloads in compatible Synology systems.
What capacity does the SNV3500-400G provide?
The SNV3500-400G provides 400 GB of SSD capacity.
What form factor is the SNV3500-400G?
It uses the M.2 22110 form factor; verify that the target internal slot or adapter accepts this length.
How fast is the SNV3500-400G?
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 SNV3500-400G 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 SNV3500-400G?
Synology specifies 500 TBW based on the JESD219A enterprise workload.
Does the SNV3500-400G include power-loss protection?
Yes. Synology specifies power-loss protection for the SNV3500-400G.
Does the SNV3500-400G 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 SNV3500-400G?
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 SNV3500-400G?
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.
