Synology SAT5221‑3840G 3.84TB SATA III 2.5″ SSD
Key Features
• 3.84 TB capacity in 2.5" SATA form factor
• SATA III 6 Gb/s interface for broad compatibility
• ~500 MB/s sequential read/write throughput
• Enterprise endurance > 7,000 TBW
• Power loss protection and 24×7 reliability
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Synology SAT5221‑3840G 3.84TB SATA III 2.5″ SSD – In Dubai
Overview :
The Synology SAT5221‑3840G is a 3.84 TB internal solid‑state drive designed for enterprise storage and NAS environments where sustained performance, reliability, and high capacity are critical. This 2.5‑inch drive is typically deployed by IT and storage engineers in NAS arrays, virtualization hosts, and high‑availability storage clusters requiring fast I/O and low latency for business workloads.
Using a SATA III 6 Gb/s interface and a 2.5‑inch 7 mm form factor, this SSD delivers consistent sequential read and write rates around 500 MB/s, alongside high random I/O performance. It is validated for constant mixed workloads and is engineered to handle 24×7 operation with endurance beyond standard consumer drives.
The drive fits into standard enterprise storage racks, compact NAS units, and server enclosures with 2.5″ bays. Its design aligns with infrastructure where SATA interfaces remain prevalent, allowing capacity scaling without requiring NVMe adoption or controller upgrades.
Integration within storage ecosystems is supported via compatibility with major NAS platforms (especially Synology DiskStation models) where firmware and analytics tools expose drive health, endurance metrics, and power loss protection status.
In practical deployment, the SAT5221‑3840G is used as primary storage in NAS volumes, cache acceleration in hybrid arrays, and in database or OLTP workloads that benefit from sustained throughput and enterprise‑grade endurance. It is not suitable for systems requiring NVMe‑level bandwidth or direct PCIe storage.
Typical Deployment Scenarios :
• High‑capacity SSD storage in Synology NAS systems
• Cache and acceleration tier in hybrid storage arrays
• Enterprise storage servers with 2.5″ SATA bays
• Databases and OLTP workloads with sustained I/O
• Virtualization and mixed workload environments
Technical Specifications :
| Specification | Details |
|---|---|
| Brand | Synology |
| Part Number | SAT5221‑3840G |
| Product Type | Solid State Drive (Internal) |
| Storage Capacity | 3.84 TB |
| Interface | SATA III (6 Gb/s) |
| Form Factor | 2.5‑inch (7 mm) |
| Max Sequential Read | ~500 MB/s |
| Max Sequential Write | ~500 MB/s |
| Random Read (4 KB) | ~90,000 IOPS |
| Random Write (4 KB) | ~30,000 IOPS |
| Endurance (TBW) | > 7,000 TB |
| Power Loss Protection | Yes |
| MTBF | ~1,500,000 hours |
| Uncorrectable Bit Error Rate | < 1 per 10^17 |
| Power (Active Read) | ~4.5 W |
| Power (Active Write) | ~5 W |
| Power (Idle) | ~1.2 W |
| Operating Temp | 0 °C to 70 °C |
| Storage Temp | –40 °C to 85 °C |
Compatibility / Ecosystem :
‑ Compatible with standard 2.5″ SATA bay systems and servers
‑ Supports enterprise NAS platforms, especially Synology DiskStation models
‑ Fits within storage arrays using SATA III backplanes
‑ Works with RAID controllers supporting SATA 6 Gb/s







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