Synology HAS5310-20T 20TB 3.5 inch SAS Enterprise Hard Drive

Synology HAS5310-20T 20TB Enterprise SAS Hard Drive for Mission-Critical Workloads

The Synology HAS5310-20T is a 20TB 3.5 inch SAS 12Gb/s enterprise hard drive delivering up to 281 MB/s sustained transfer speeds at 7,200 RPM, purpose-built for Synology HD, SA, and UC series systems running demanding workloads.

Ideal for IT administrators, data centers, and enterprises seeking high-capacity SAS storage for virtualization, video surveillance archiving, database hosting, and always-on NAS deployments requiring maximum reliability and throughput.

Backed by Synology's 5-year limited warranty and validated through 200,000 hours of rigorous testing on Synology hardware, the HAS5310 series carries a 2.5 million-hour MTBF rating and supports one-click firmware updates through DSM, making it a trusted choice for enterprise storage ecosystems.

Key Features of the Synology HAS5310-20T

• Class-Leading Sequential Performance: Delivers up to 281 MB/s sustained data transfer, 8% faster sequential read speeds compared to similar-class drives, accelerating backups, rebuilds, and data-intensive applications.
• Low-Latency SAS 12Gb/s Interface: The SAS protocol provides lower latency and higher command queue depth than SATA, ensuring consistent performance under heavy enterprise workloads.
• Faster Drive Repair: Up to 19% faster drive repair in Synology NAS systems minimizes rebuild windows and reduces risk during recovery events.
• Exceptional Reliability: Rated for 2.5 million hours MTBF and validated through 200,000+ hours of testing on Synology hardware for unmatched integration reliability.
• Seamless DSM Integration: One-click drive firmware updates through Synology DiskStation Manager simplify maintenance and keep drives optimized without manual intervention.
• Enterprise-Grade Durability: Operates reliably from 5 degrees C to 60 degrees C, with a non-operating range of -40 degrees C to 70 degrees C for safe transport and storage.
• 5-Year Warranty: Covered by Synology's 5-year limited warranty, providing long-term investment protection for enterprise deployments.

Technical Specifications

• Capacity: 20 TB
• Form Factor: 3.5 inch
• Interface: SAS 12 Gb/s
• Rotational Speed: 7,200 RPM
• Maximum Sustained Data Transfer Speed: 281 MB/s
• Active Idle Power Consumption: 4.74 W
• Random Read/Write Power (4KB Q1): 8.46 W
• Operating Temperature: 5 degrees C to 60 degrees C (41 degrees F to 140 degrees F)
• Non-Operating Temperature: -40 degrees C to 70 degrees C (-40 degrees F to 158 degrees F)
• Dimensions (L x W x H): 6 x 4 x 2 inches
• Weight: 1.59 lbs
• MTBF: 2.5 million hours
• Warranty: 5 years
• MPN: HAS5310-20T
• UPC: 846504005826