12TB enterprise 3.5-inch SAS hard drive
Synology HAS5310-12T 12TB Enterprise SAS HDD
The Synology HAS5310-12T is a 12TB, 7,200 rpm enterprise hard drive with a 12 Gb/s SAS interface, designed and validated for compatible Synology systems handling sustained business storage workloads.
- Capacity
- 12 TB
- Form factor
- 3.5-inch
- Interface
- SAS 12 Gb/s
- Rotational speed
- 7,200 rpm
Purpose-built SAS storage for compatible Synology systems
The HAS5310-12T combines enterprise SAS connectivity, sustained transfer performance and Synology-specific validation. It is positioned for compatible HD, SA and UC series systems where administrators value coordinated drive monitoring, DSM-based firmware maintenance and a five-year limited warranty.
Synology system validation
The HAS5300 series undergoes extensive stress testing and compatibility verification for supported Synology platforms.
Enterprise SAS interface
A 12 Gb/s SAS interface supports deployments built around compatible Synology enterprise storage systems.
Sustained transfer performance
The 12TB model is rated for up to 281 MB/s maximum sustained data transfer speed under the stated test conditions.
Workload durability
The series is rated for a 2.5 million-hour MTBF and workloads up to 550 TB per year.
DSM firmware maintenance
Supported Synology systems can provide drive-health insights and streamlined firmware-update management.
Five-year coverage
The stated five-year limited warranty begins from the purchase date shown on the purchase receipt.
Who is the Synology HAS5310-12T best for?
A strong choice for
- Compatible Synology HD, SA and UC series deployments
- Enterprise capacity expansion using validated SAS drives
- Administrators seeking coordinated drive and DSM management
- Sustained business storage workloads
- Deployments requiring a five-year drive warranty
Consider another model if you need
- Your Synology system requires SATA rather than SAS drives
- The exact NAS or storage system is not listed as compatible
- You need a different capacity or form factor
Key specifications
- Capacity
- 12 TB
- Form factor
- 3.5-inch
- Interface
- SAS 12 Gb/s
- Rotational speed
- 7,200 rpm
- Maximum sustained transfer
- 281 MB/s typical
- MTBF
- 2.5 million hours
- Workload rating
- Up to 550 TB per year
- Active idle power
- 3.76 W typical
- Random read/write power
- 7.95 W typical
- Warranty
- 5 years
Full technical specifications
General and performance
| Capacity | 12 TB |
|---|---|
| Form factor | 3.5-inch |
| Interface | SAS 12 Gb/s |
| Rotational speed | 7,200 rpm |
| Maximum sustained data transfer speed (typical) | 281 MB/s |
Reliability, power and temperature
| Mean time between failures (MTBF) | 2.5 million hours |
|---|---|
| Supported workload | Up to 550 TB per year |
| Warranty | 5 years |
| Warranty start | Purchase date stated on the purchase receipt |
| Active idle power (typical) | 3.76 W |
| Random read/write power, 4KB Q1 (typical) | 7.95 W |
| 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 HAS5310-12T
What is the Synology HAS5310-12T?
It is a 12TB, 3.5-inch enterprise SAS hard drive in Synology's HAS5300 series.
What interface does the HAS5310-12T use?
The HAS5310-12T uses a SAS 12 Gb/s interface.
What is the rotational speed of the HAS5310-12T?
It operates at 7,200 rpm.
What transfer speed is specified for the HAS5310-12T?
Synology lists a typical maximum sustained data transfer speed of 281 MB/s.
What workload rating applies to the HAS5310-12T?
The HAS5300 series is rated for workloads up to 550 TB per year.
What is the MTBF rating of the HAS5310-12T?
The stated MTBF is 2.5 million hours; MTBF is a statistical reliability value, not a guarantee of individual drive life.
Which Synology systems can use the HAS5310-12T?
Synology positions the HAS5300 series for compatible HD, SA and UC systems. Check the exact model in Synology's current compatibility list before purchase.
Can firmware be updated through DSM?
Synology states that supported systems provide firmware-update management through DSM.
What temperatures are specified for the HAS5310-12T?
The operating range is 5°C to 60°C, and the non-operating range is -40°C to 70°C.
What warranty applies to the HAS5310-12T?
It has a five-year limited warranty beginning from the purchase date shown on the receipt.
- Compatibility is model-specific; confirm the HAS5310-12T against Synology's current drive compatibility list before purchase.
- MTBF is a statistical reliability measure and does not predict or guarantee the service life of an individual drive.
- Actual performance and power consumption vary with workload, host system and configuration.
