20TB enterprise 3.5-inch SAS hard drive
Synology HAS5310-20T 20TB Enterprise SAS HDD
The Synology HAS5310-20T is a 20TB, 7,200 rpm enterprise SAS hard drive for supported Synology systems, with a 12 Gb/s SAS interface, 281 MB/s typical sustained transfer speed and five-year warranty.
- Capacity
- 20 TB
- Interface
- SAS 12 Gb/s
- Rotational speed
- 7,200 rpm
- Transfer speed
- 281 MB/s typical
High-capacity SAS storage validated for Synology
The HAS5310-20T is designed for compatible Synology SAS platforms that require high capacity per drive and a published enterprise reliability profile. DSM firmware integration, stress testing and detailed power specifications help administrators plan and maintain large storage deployments.
20TB SAS capacity
The drive combines 20TB of capacity with a 3.5-inch SAS 12 Gb/s interface.
Enterprise workload profile
Synology rates the Enterprise SAS series for workloads up to 550 TB per year.
Persistent write cache
Persistent write-cache technology is designed to help protect data integrity during sudden power loss.
DSM firmware integration
Supported drive firmware updates can be managed through DSM as part of routine maintenance.
Synology validation
The HAS5300-series platform has undergone more than 200,000 hours of testing on compatible Synology devices.
Five-year warranty
The HAS5310-20T is covered by a five-year limited warranty beginning from the receipt purchase date.
Who is the Synology HAS5310-20T best for?
A strong choice for
- Supported Synology SAS storage systems
- Enterprise deployments requiring 20TB per drive
- High-capacity backup and data-retention workloads
- Administrators seeking DSM-managed firmware updates
- Storage environments requiring five-year drive coverage
Consider another model if you need
- Your system supports SATA drives only
- The exact Synology system does not list HAS5310-20T as compatible
- You require a different capacity or interface
Key specifications
- Capacity
- 20 TB
- Form factor
- 3.5-inch
- Interface
- SAS 12 Gb/s
- Rotational speed
- 7,200 rpm
- Maximum sustained transfer
- 281 MB/s typical
- Workload rating
- Up to 550 TB/year
- MTTF
- Up to 2.5 million hours
- Active idle power
- 4.74 W typical
- Random read/write power
- 8.46 W typical
- Warranty
- 5 years
Full technical specifications
Hardware, performance and reliability
| Model | HAS5310-20T |
|---|---|
| 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 typical |
| Mean time to failure (MTTF) | Up to 2.5 million hours |
| Workload rating | Up to 550 TB per year |
| Warranty | 5 years |
Power and temperature
| Active idle power | 4.74 W typical |
|---|---|
| Random read/write power (4KB Q1) | 8.46 W typical |
| Power note | Power consumption may differ according to configurations and platforms. |
| Operating temperature | 5°C to 60°C (41°F to 140°F) |
| Non-operating temperature | -40°C to 70°C (-40°F to 158°F) |
Frequently asked questions about the Synology HAS5310-20T
What is the Synology HAS5310-20T?
It is a 20TB enterprise 3.5-inch SAS hard drive designed for supported Synology storage systems.
What interface does the HAS5310-20T use?
It uses SAS 12 Gb/s.
What rotational speed does the HAS5310-20T use?
It operates at 7,200 rpm.
What transfer speed is listed for the HAS5310-20T?
Synology lists a typical maximum sustained data transfer speed of 281 MB/s.
What workload rating applies to the HAS5310-20T?
Synology lists up to 550 TB per year for the Enterprise SAS series.
What is the HAS5310-20T MTTF rating?
The series is rated up to 2.5 million hours MTTF, a statistical value rather than a guarantee of individual drive life.
Can HAS5310-20T firmware be updated through DSM?
Yes. Synology states that supported drive firmware updates can be handled through DSM.
Which systems support the HAS5310-20T?
Compatibility is model-specific; check the exact system on Synology's current compatibility list.
What is the HAS5310-20T operating temperature?
The specified operating range is 5°C to 60°C.
What warranty applies to the HAS5310-20T?
It has a five-year limited warranty beginning from the purchase date shown on the receipt.
- Confirm SAS compatibility for the exact Synology system before purchase.
- MTTF is a statistical reliability value, not a guarantee of individual operating life.
- Performance and power consumption may vary with the workload and system configuration.
