Synology SAT5221 3.84TB Enterprise SATA III 2.5" Internal SSD
The Synology SAT5221-3840G is an enterprise-grade 3.84TB solid-state drive built specifically for demanding 24/7 workloads in Synology NAS systems. Engineered for critical applications like online transaction processing (OLTP) databases, virtualisation deployments, and data-intensive environments, this 2.5" SATA SSD delivers stable I/O performance, reduced latency, and exceptional reliability with 7,000 TBW endurance and a 1.5 million hour MTBF.
Why You'll Love the Synology SAT5221
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Enterprise-Grade Reliability: Built to handle mixed and intensive 24/7 workloads without compromising endurance
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Exceptional Endurance: Up to 7,000 TBW (terabytes written) ensures long-term reliability for mission-critical data
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Fast Performance: 500 MB/s sequential read and write speeds with 90,000 IOPS random read performance
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Data Protection: End-to-end data protection and power loss protection (PLP) safeguard your data integrity
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Seamless Integration: Optimised for Synology NAS systems with full DSM integration for lifetime analytics and automatic firmware updates
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5-Year Warranty: Enterprise-level warranty coverage for peace of mind
Built for Demanding Environments
The SAT5221 series is engineered for the most demanding storage environments. Whether you're running OLTP databases, virtualisation workloads, or high-traffic file servers, this SSD delivers consistently high performance while maintaining data integrity. With stable I/O performance and reduced latency, critical services and applications run smoothly with minimal service disruptions.
Advanced Data Protection
Your data is protected at every stage. End-to-end data protection ensures data integrity and consistency over the entire transfer path, while dedicated capacitors provide power loss protection to flush data-in-flight into NAND flash during unexpected power events, preventing data corruption.
Optimised for Synology Systems
Full integration with Synology DiskStation Manager (DSM) enables lifetime analytics for each drive based on actual workloads. You'll receive automatic firmware update notifications with one-click installation through DSM, minimising maintenance workload and reducing the chance of oversights. The SAT5221 is thoroughly validated for Synology systems following each engineering change, ensuring strict quality and reliability standards.
What's in the Box
- Synology SAT5221-3840G 3.84TB SATA SSD
Full Specifications
General
| Capacity |
3.84 TB |
| Form Factor |
2.5" (7mm) |
| Interface |
SATA 6 Gb/s (SATA III) |
| Device Type |
Internal Enterprise SSD |
Performance
| Sequential Read (128 KB, QD32) |
500 MB/s |
| Sequential Write (128 KB, QD32) |
500 MB/s |
| Random Read (4KB, QD32) |
90,000 IOPS |
| Random Write (4KB, QD32) |
30,000 IOPS |
Endurance & Reliability
| Terabytes Written (TBW) |
>7,000 TB |
| Mean Time Between Failures (MTBF) |
1,500,000 hours |
| Uncorrectable Bit Error Rate (UBER) |
<1 sector per 1017 bits read |
| Power Loss Protection |
Yes |
| End-to-End Data Protection |
Yes |
| Warranty |
5 years |
Power Consumption
| Supply Voltage |
5 V (±5%) |
| Active Read (Typical) |
4.5 W |
| Active Write (Typical) |
5 W |
Environmental
| Operating Temperature |
0°C to 70°C |
| Storage Temperature |
-40°C to 85°C |
| 24x7 Operation |
Yes |
Compatibility
| Device Support |
Synology NAS systems |
| DSM Integration |
Full integration with lifetime analytics and automatic firmware updates |
Specifications are sourced from the manufacturer product page and may be updated.
