20 TB Plus Series 3.5-inch SATA HDD
Synology HAT3320-20T 20 TB 3.5-inch SATA Plus Series HDD
The Synology HAT3320-20T is a 20 TB, 3.5-inch SATA hard drive designed to meet the reliability, endurance and performance requirements of 24/7 storage in compatible Synology systems. It operates at 7,200 rpm and delivers a typical maximum sustained data transfer speed of 295 MB/s.
- Capacity
- 20 TB
- Interface
- SATA 6 Gb/s
- Rotational speed
- 7,200 rpm
- Typical transfer speed
- 295 MB/s
Reliable storage for home and small-office Synology systems
The Synology HAT3320-20T combines 20 TB capacity, a helium-sealed drive design, 7,200 rpm operation and a 295 MB/s typical maximum sustained transfer speed. Synology Plus Series drives undergo stringent validation and more than 500,000 hours of testing to support consistent operation in compatible Synology storage systems.
20 TB capacity
Adds 20 TB of 3.5-inch SATA hard-drive capacity to a compatible Synology storage system.
295 MB/s transfer speed
The HAT3320-20T provides a typical maximum sustained data transfer speed of 295 MB/s.
NAS-class reliability
A 1.2 million-hour MTBF rating and 180 TB/year workload rating support demanding always-on storage environments.
Reliable CMR technology
Conventional magnetic recording technology provides consistent performance for storage workloads.
DSM firmware updates
Available drive firmware updates can be installed directly through Synology DiskStation Manager without removing the drive.
Three-year warranty
The HAT3320-20T is covered by Synology's three-year limited warranty, beginning from the purchase date shown on the receipt.
Who is the Synology HAT3320-20T best for?
A strong choice for
- Compatible Synology systems requiring 20 TB of internal storage capacity
- Home and small-office file storage and backup
- Always-on and multi-user storage environments
- Administrators wanting Synology-validated drive media
- Deployments that value firmware maintenance through DSM
Consider another model if you need
- A drive not listed as compatible with the target Synology system
- SSD latency rather than mechanical hard-drive capacity
- A capacity other than 20 TB
- Portable external storage rather than an internal NAS drive
Key specifications
- Model
- HAT3320-20T
- Capacity
- 20 TB
- Form factor
- 3.5-inch
- Drive design
- Helium-sealed
- Interface
- SATA 6 Gb/s
- Sector size
- 512e
- Rotational speed
- 7,200 rpm
- Cache
- 1 GB
- Maximum sustained transfer speed
- 295 MB/s typical
- MTBF
- 1,200,000 hours
- Workload rating
- 180 TB/year data write/read
- Warranty
- 3 years
Full technical specifications
Hardware and performance
| Model number | HAT3320-20T |
|---|---|
| Capacity | 20 TB |
| Form factor | 3.5-inch |
| Interface | SATA |
| Interface speed | 6 Gb/s |
| Sector size | 512e |
| Drive design | Helium-sealed |
| Recording technology | Conventional magnetic recording (CMR) |
| Rotational speed | 7,200 rpm |
| Cache | 1 GB |
| Maximum sustained data transfer speed | 295 MB/s typical |
Reliability and warranty
| MTBF | 1,200,000 hours |
|---|---|
| Workload rating | 180 TB/year data write/read |
| Validation testing | More than 500,000 hours of compatibility and stress testing |
| Warranty | 3 years |
Power consumption
| Supply voltage | 12 V (±10%) / 5 V (+10%/-7%) |
|---|---|
| Idle power average | 4.35 W |
| Average operating power | 7.62 W |
Environmental specifications
| 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) |
| 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 |
Acoustics, dimensions and certification
| Acoustics, idle | 20 dB typical |
|---|---|
| Acoustics, seek | 32 dB typical |
| Dimensions (H × W × D) | 26.1 × 101.85 × 147 mm |
| Weight | 730 g |
| Certification | CE, RCM, BSMI, KC, UKCA, UL, TUV, ICES and RoHS |
Frequently asked questions about the Synology HAT3320-20T
What is the Synology HAT3320-20T?
It is a 20 TB, 3.5-inch SATA Plus Series hard drive designed for 24/7 storage in compatible Synology systems.
What capacity does the HAT3320-20T provide?
The HAT3320-20T provides 20 TB of hard-drive capacity. Actual formatted and available capacity will be lower and varies according to formatting, configuration, software and operating system.
What interface does the HAT3320-20T use?
It uses a SATA interface supporting an interface speed of 6 Gb/s.
What rotational speed does the HAT3320-20T use?
The HAT3320-20T operates at 7,200 rpm.
What transfer speed is specified for the HAT3320-20T?
Synology specifies a typical maximum sustained data transfer speed of 295 MB/s.
How much cache does the HAT3320-20T have?
The HAT3320-20T has 1 GB of cache.
What workload rating applies to the HAT3320-20T?
The drive has a workload rating of 180 TB per year for data written, read or verified by commands from a host system.
Is the HAT3320-20T designed for continuous operation?
Yes. Synology Plus Series drives are designed to meet the requirements of 24/7 storage in home and small-office Synology systems.
Can its firmware be updated through DSM?
Yes. Synology states that available firmware updates can be performed directly through DSM on a supported Synology storage system.
What operating temperature is specified?
The specified operating temperature range is 5°C to 60°C (41°F to 140°F).
What warranty applies to the HAT3320-20T?
Synology specifies a three-year limited warranty beginning from the purchase date shown on the purchase receipt.
How do I confirm system compatibility?
Check Synology's current compatibility information for the exact NAS or storage system before purchasing or installing the drive.
- Confirm the exact Synology system and current drive compatibility before purchase.
- MTBF is a statistical reliability value and is not a guarantee or estimate of the operating life of an individual drive.
- The workload rating measures data written, read or verified by commands from a host system.
- Performance and power consumption may vary according to workload, platform and configuration.
- The three-year warranty period starts from the purchase date stated on the purchase receipt.
- Drive capacity uses the decimal convention of 1 TB equalling 1,000,000,000,000 bytes. The operating system will report less available capacity.
