Synology 12TB HAS5300 SAS-3 3.5″ Internal Enterprise HDD
Description
The Synology HAS5300-12T is a 12 TB, 3.5″ SAS-3 (12 Gb/s) enterprise HDD engineered for nonstop, high-availability deployments in NAS and SAN environments. It combines a helium-sealed design, 7 200 RPM spindle speed, and Synology-tuned firmware to deliver class-leading performance, reliability, and seamless DiskStation Manager integration.
Hardware Specifications
| Specification | Details |
|---|---|
| Capacity | 12 TB |
| Form Factor | 3.5″ |
| Interface | SAS-3 (12 Gb/s) |
| Rotational Speed | 7 200 RPM |
| Cache | 512 MB DDR |
| Sector Format | 512e |
| Drive Design | Helium-sealed |
| Warranty | 5-year limited |
Performance
| Metric | Specification |
|---|---|
| Maximum Sustained Transfer (Typ.) | 254 MB/s |
| RAID Rebuild Optimization | Up to 27% faster array repair |
Performance figures are measured in SNIA-compliant steady-state tests on Synology platforms to guarantee consistent throughput under heavy mixed I/O workloads.
Reliability & Data Integrity
| Attribute | Specification |
|---|---|
| MTBF | 2.5 million hours |
| Workload Rating | 550 TB per year |
| Validation Testing | Over 200 000 hours of in-house stress |
| Persistent Write Cache | Yes |
| Power-Loss Protection | Onboard capacitors |
Built for 24/7 operation, HAS5300 drives undergo rigorous validation to prevent data corruption and maximize drive lifespan.
Power & Thermal
| Condition | Specification |
|---|---|
| Active Idle Power | 4.36 W |
| Random Read/Write Power | 7.80 W |
| Supply Voltage | 12 V DC |
| Operating Temperature | 5 °C to 60 °C |
| Non-operating Temperature | –40 °C to 70 °C |
Power and thermal values are measured under Synology’s standard test methodology to ensure energy-efficient, high-density deployments.
Environmental & Mechanical
| Attribute | Specification |
|---|---|
| Operating Humidity | 5% to 95% RH (non-condensing) |
| Certifications | CE, RCM, BSMI, KC, UKCA, UL, TUV, ICES, RoHS |
Key Features
- Enterprise Durability
Rated for 2.5 million-hour MTBF and 550 TB/year workload to support demanding 24/7 applications. - Accelerated RAID Recovery
Firmware fine-tuned by Synology delivers up to 27% faster RAID array rebuilds, reducing degraded-mode exposure. - Data Integrity Safeguards
Persistent write cache minimizes corruption risk during unexpected power loss, while extensive validation ensures interoperability. - One-Stop Maintenance
Firmware updates and health monitoring integrate seamlessly within DiskStation Manager’s Storage Manager console. - Helium-Sealed Design
Lowers internal airflow turbulence for cooler operation and higher density storage arrays.
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