Synology 480GB SAT5221 SATA III 2.5″ Internal SSD – SAT5221-480G
Overview
The 480 GB SAT5221-480G is an enterprise-grade 2.5″ SATA III SSD engineered for Synology NAS systems, delivering consistent low-latency performance, high endurance, and power-loss protection for mixed and intensive 24/7 workloads.
Performance Specifications
| Metric | Specification |
|---|---|
| Sequential Read (128 KB, QD32) | 500 MB/s |
| Sequential Write (128 KB, QD32) | 500 MB/s |
| Random Read (4 KB, QD32) | Up to 90,000 IOPS |
| Random Write (4 KB, QD32) | Up to 30,000 IOPS |
Endurance & Reliability
| Attribute | Specification |
|---|---|
| Endurance (TBW) | 900 TB written |
| MTBF | 1.5 million hours |
| UBER | < 1 sector per 10^17 bits read |
| Power-Loss Protection | Integrated capacitors flush in-flight data |
| Warranty | 5 years (or until TBW is reached) |
Built for continuous operation, the SAT5221-480G features end-to-end data protection and power-loss circuitry to guard against corruption and unplanned outages.
Power & Thermal
| Condition | Power Consumption | Notes |
|---|---|---|
| Active Read (Typ.) | 4.5 W | Measured under standard test loads |
| Active Write (Typ.) | 5 W | Varies by workload and system |
| Idle | 1.2 W | Low idle power extends SSD lifespan |
| Operating Temperature | 0 °C to 70 °C | |
| Storage Temperature | –40 °C to 85 °C |
Physical & Compatibility
| Attribute | Specification |
|---|---|
| Form Factor | 2.5″ × 7 mm |
| Interface | SATA III 6 Gb/s |
| Compatible Series | SAT5210, SAT5221, SAT5222, SAT5230 |
| Dimensions (L×W×H) | 100 × 69.85 × 7 mm |
| Weight | ~45 g |
Fully validated for seamless plug-and-play integration with Synology DiskStation Manager and firmware update support.
Key Features
- Designed for Synology NAS: native DSM integration and automatic firmware updates
- Stable high performance: up to 500 MB/s sequential throughput and 90,000/30,000 IOPS random read/write
- Enterprise endurance: 900 TBW rating and 1.5 million-hour MTBF
- Power-loss protection: onboard capacitors flush in-flight data to prevent corruption
- Data integrity: end-to-end error correction with UBER < 1 sector per 10^17 bits
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