24TB Enterprise 3.5-inch SAS HDD
Synology HAS5320-24T 24TB Enterprise SAS Hard Drive
A 24TB helium-sealed enterprise hard drive designed for demanding, always-on storage in compatible Synology SA, HD and UC Series systems. The HAS5320-24T combines a 12 Gb/s SAS interface, 7,200 RPM operation, 1GB cache and a typical maximum sustained transfer speed of 309 MB/s.
Enterprise storage for demanding, mission-critical workloads
The Synology HAS5320-24T is a high-capacity enterprise SAS hard drive developed and tested for tight integration with compatible Synology SA, HD and UC Series storage systems. Its 24TB capacity, 550TB/year workload rating and 2.5 million-hour MTBF make it a strong choice for scalable, high-availability environments serving large pools of concurrent clients.
Key features and benefits
24TB enterprise capacity
Provides high-capacity storage for compatible enterprise Synology systems and large data pools.
12 Gb/s SAS interface
The enterprise SAS interface helps applications take advantage of the available bandwidth in compatible Synology storage systems.
Enterprise durability
A 2.5 million-hour MTBF and 550TB/year workload rating support demanding 24/7 storage environments.
Persistent write cache
Persistent write-cache technology helps protect data integrity during sudden power loss while enhancing overall write performance.
Optimised array repair
Firmware integration with Synology DSM can deliver up to 19% faster RAID array repair, reducing the time a tested system spends in a degraded state.
Integrated maintenance
Drive firmware updates can be performed through Synology DSM, simplifying maintenance and helping improve system service availability.
Validated for reliable Synology integration
HAS5300 Series drives undergo more than 200,000 hours of validation and stress testing with Synology systems. This testing is designed to ensure interoperability and reliable operation in compatible Synology solutions under heavy workloads. The drive is also covered by Synology's five-year limited warranty for long-term system support.
Who is the Synology HAS5320-24T best for?
A strong choice for
- Compatible Synology SA, HD and UC Series storage systems
- High-capacity enterprise storage deployments
- Mission-critical workloads requiring 24/7 operation
- Scalable and high-availability storage environments
- Systems serving large pools of concurrent clients
- Administrators wanting integrated DSM firmware maintenance
Consider another model if you need
- A SATA drive rather than an enterprise SAS drive
- A drive for a system that does not list HAS5320-24T as compatible
- SSD latency rather than mechanical hard-drive capacity
- A storage capacity other than 24TB
Key specifications
Full technical specifications
Hardware and performance
| Model number | HAS5320-24T |
|---|---|
| Series | Synology HAS5300 Enterprise Series |
| Capacity | 24TB |
| Form factor | 3.5-inch |
| Interface | SAS 12 Gb/s |
| Supported interface speeds | 12.0 Gb/s, 6.0 Gb/s, 3.0 Gb/s and 1.5 Gb/s |
| Sector size | 512e |
| Drive design | Helium-sealed |
| Rotational speed | 7,200 RPM |
| Cache | 1GB |
| Maximum sustained data transfer speed | 309 MB/s typical |
Reliability and warranty
| Mean time between failure | 2,500,000 hours |
|---|---|
| Workload rating | 550TB/year data write/read |
| Validation testing | More than 200,000 hours of validation and stress testing with Synology systems |
| Persistent write cache | Supported |
| Firmware updates | Drive firmware update capability through Synology DSM |
| Warranty | 5-year Synology limited warranty |
Power consumption
| Supply voltage | 12 V (±10%) / 5 V (+10%/-7%) |
|---|---|
| Idle power average | 4.83 W |
| Average operating power | 8.57 W |
Environmental specifications
| Operating temperature | 5°C to 60°C (41°F to 140°F), no condensation |
|---|---|
| Non-operating temperature | -40°C to 70°C (-40°F to 158°F), no condensation |
| Operating shock | 490 m/s², 2 ms duration |
| Non-operating shock | 1,960 m/s², 2 ms duration |
| Operating vibration | 5 Hz to 300 Hz: 7.35 m/s²; 300 Hz to 500 Hz: 2.45 m/s² |
| Non-operating vibration | 5 Hz to 500 Hz: 29.4 m/s² |
| Operating altitude | -304.8 m to 3,048 m |
| Non-operating altitude | -304.8 m to 12,192 m |
| Operating relative humidity | 5% to 90% R.H., no condensation |
| Non-operating relative humidity | 5% to 95% R.H., no condensation |
Physical specifications and certification
| Dimensions (H × W × D) | 26.1 × 101.85 × 147 mm |
|---|---|
| Weight | 730 g |
| Certification | CE, RCM, BSMI, KC, EAC, UKCA, UL, TUV, ICES, RoHS and Morocco Mark |
Frequently asked questions about the HAS5320-24T
What is the Synology HAS5320-24T?
The HAS5320-24T is a 24TB, 3.5-inch enterprise SAS hard drive designed for demanding 24/7 workloads in compatible Synology SA, HD and UC Series systems.
What interface does the HAS5320-24T use?
It uses a 12 Gb/s SAS interface and supports interface speeds of 12.0, 6.0, 3.0 and 1.5 Gb/s.
What transfer speed does the HAS5320-24T provide?
Synology specifies a typical maximum sustained data transfer speed of 309 MB/s.
How much cache does the HAS5320-24T have?
The HAS5320-24T has 1GB of cache.
What workload rating applies to the HAS5320-24T?
It has a 550TB/year workload rating, measured as data written, read or verified by commands from a host system.
What is the MTBF rating?
The HAS5320-24T has a stated mean time between failure rating of 2.5 million hours. MTBF is a statistical reliability value and is not a guarantee of an individual drive's service life.
Does the HAS5320-24T support persistent write cache?
Yes. Persistent write-cache technology helps reduce the chance of data corruption during sudden power loss and enhances overall write performance.
Can the drive firmware be updated through DSM?
Yes. Synology states that drive firmware updates can be performed through DSM on compatible Synology storage systems.
Which Synology systems is the HAS5320-24T intended for?
HAS5300 Series drives are developed and tested for compatible Synology SA, HD and UC Series systems. Some exceptions may apply, so check the current Synology compatibility list for the exact system before purchase.
What warranty applies to the HAS5320-24T?
Synology provides a five-year limited warranty beginning from the purchase date shown on the purchase receipt.
Important information
Check the current Synology compatibility list for the exact SA, HD or UC Series storage system before purchase. Some compatibility exceptions may apply.
The stated up to 19% faster RAID array repair result was measured by Synology using twelve HAS5310-12T drives in an SA3610 configured with RAID 5 against similar-class enterprise drives. Results are for reference only and actual performance may vary by workload, test method, hardware and software configuration.
MTBF is a statistical reliability value and is not a guarantee or estimate of the operating life of an individual drive.
Drive capacity uses the decimal convention of 1TB equalling 1,000,000,000,000 bytes. Operating systems will report less available capacity, and actual formatted capacity varies.
The five-year warranty period starts from the purchase date stated on the purchase receipt.
