Synology 20TB HAT5310 SATA III 3.5″ Internal Enterprise HDD – HAT5310-20T
Description
The Synology HAT5310-20T is a 20 TB, 3.5″ SATA III (6 Gb/s) enterprise hard drive engineered for 24/7 Synology NAS deployments. It spins at 7,200 RPM, features a 512 MB cache, and delivers up to 268 MB/s sustained sequential transfer rates, making it ideal for heavy multi-client file sharing, backups, and surveillance storage.
General Specifications
| Attribute | Details |
|---|---|
| Capacity | 20 TB |
| Form Factor | 3.5″ |
| Interface | SATA III (6 Gb/s) |
| Rotational Speed | 7,200 RPM |
| Cache | 512 MB |
| Warranty | 5-year limited warranty |
Performance
| Metric | Specification |
|---|---|
| Sustained Sequential Read/Write | Up to 268 MB/s |
| Random Read/Write (4 KB, QD1)* | Not specified by Synology |
| Optimization | Up to 23% faster multi-client sequential read in DSM-integrated testing |
* Random I/O performance varies by workload and system configuration.
Endurance & Reliability
| Attribute | Specification |
|---|---|
| MTBF | 2.5 million hours |
| Workload Rating | 550 TB/year |
| Persistent Write Cache | Yes |
| Power-Loss Protection | Yes (onboard capacitors) |
| Validation | 500,000+ hours of in-house stress tests |
Power & Thermal
| Condition | Consumption / Range |
|---|---|
| Active Idle | 4.38 W |
| Random Read/Write (4 KB Q1)* | 8.11 W |
| Operating Temperature | 5 °C to 60 °C |
| Non-operating Temp. | –40 °C to 70 °C |
* Power under random I/O measured per Synology test methodology.
Physical & Environmental
| Attribute | Specification |
|---|---|
| Dimensions (L×W×H) | 147 × 101.6 × 26.1 mm |
| Weight | ~720 g |
| Operating Humidity | 5% to 95% RH |
Key Features
- Enterprise Reliability: 5-year warranty, 2.5 million-hour MTBF, and rigorous Synology validation testing ensure continuous operation in demanding environments.
- High Performance: 512 MB cache and firmware optimizations deliver up to 268 MB/s sustained throughput for heavy multi-user workloads.
- Data Protection: Persistent write cache and power-loss protection circuitry safeguard data integrity during outages.
- Seamless DSM Integration: One-click firmware updates, health monitoring, and RAID optimization via Synology DiskStation Manager.
- Optimized for NAS: Purpose-built for Synology systems, the HAT5310 series drives offer deep hardware-software integration and consistent performance scaling.
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