Synology Plus Series NAS HDD SATA 6Gb/s - 4TB to 20TB
8 TB - HAT3320-8T
£537.74
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Synology
Synology Plus Series NAS HDD SATA 6Gb/s - 4TB to 20TB
£537.74
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The Synology Plus Series NAS HDD is a purpose-built 3.5-inch hard drive designed for Synology NAS systems in home and small office environments. Using 100% conventional magnetic recording (CMR) technology, it delivers consistent write performance across its lifespan and is validated for smooth 24/7 operation under multi-user workloads. It suits users who want a drive that has been tested and optimised specifically for Synology DSM rather than a generic desktop or enterprise alternative.
Why this product
CMR technology for consistent write performance
100% conventional magnetic recording means write speeds remain stable throughout the drive's lifespan, avoiding the performance dips associated with SMR technology.
Validated for 24/7 multi-user NAS workloads
Each drive undergoes stringent compatibility and stress testing — up to 300,000 hours — to confirm reliable continuous operation inside Synology enclosures.
High MTBF ratings across the range
Air-filled models carry a 1,000,000-hour MTBF rating; helium-sealed 12 TB, 16 TB and 20 TB models are rated at 1,200,000 hours.
Firmware updates managed inside DSM
Drive firmware can be applied directly through Synology DiskStation Manager without removing the drive or using separate tools.
3-year warranty included
All capacities carry a 3-year manufacturer warranty.
- Capacity4 TB
- Rotational Speed5,400 rpm
- Cache256 MB
- Max. Sustained Transfer Speed202 MB/s
- Drive DesignAir
- MTBF1,000,000 hours
- Workload Rating180 TB/year
- Warranty3 Years
- SKUSYN-527-4TB
- EAN4711174725120
- Capacity6 TB
- Rotational Speed5,400 rpm
- Cache256 MB
- Max. Sustained Transfer Speed202 MB/s
- Drive DesignAir
- MTBF1,000,000 hours
- Workload Rating180 TB/year
- Warranty3 Years
- SKUSYN-528-6TB
- EAN4711174725137
- Capacity8 TB
- Rotational Speed7,200 rpm
- Cache256 MB
- Max. Sustained Transfer Speed281 MB/s
- Drive DesignAir
- MTBF1,000,000 hours
- Workload Rating300 TB/year
- Warranty3 Years
- SKUSYN-529-8TB
- EAN4711174726349
- Capacity12 TB
- Rotational Speed7,200 rpm
- Cache512 MB
- Max. Sustained Transfer Speed281 MB/s
- Drive DesignHelium-sealed
- MTBF1,200,000 hours
- Workload Rating180 TB/year
- Warranty3 Years
- SKUSYN-530-12T
- EAN4711174725588
- Capacity16 TB
- Rotational Speed7,200 rpm
- Cache512 MB
- Max. Sustained Transfer Speed281 MB/s
- Drive DesignHelium-sealed
- MTBF1,200,000 hours
- Workload Rating180 TB/year
- Warranty3 Years
- SKUSYN-531-16T
- EAN4711174725595
- Capacity20 TB
- Rotational Speed7,200 rpm
- Cache1 GB
- Max. Sustained Transfer Speed295 MB/s
- Drive DesignHelium-sealed
- MTBF1,200,000 hours
- Workload Rating300 TB/year
- Warranty3 Years
- SKUSYN-532-20T
- EAN4711174726561
- Designed and validated for use in Synology NAS enclosures running DiskStation Manager (DSM).
- Connects via SATA 6 Gb/s — compatible with any enclosure or host controller supporting the SATA III standard.
- 3.5-inch form factor fits standard NAS drive bays.
- Validated for Synology systems specifically; compatibility with other NAS brands should be confirmed against those vendors' hard drive compatibility lists.
- 12 TB, 16 TB and 20 TB models use helium-sealed enclosures; ensure your NAS environment can accommodate these if operating in low-pressure or high-altitude conditions.
- Not designed as a desktop or direct-attached personal storage drive; intended for always-on NAS environments.
Best for
- Synology NAS owners who want drives that have been validated and stress-tested for their specific enclosure and DSM software.
- Home and small office users running 24/7 NAS workloads with multiple concurrent users accessing shared storage.
- Users who value consistent write performance — CMR technology avoids the variable write speeds of SMR designs.
- Those needing high-capacity helium-sealed options — 12 TB, 16 TB and 20 TB models offer 1,200,000-hour MTBF and higher sustained transfer speeds.
- Users who want in-system firmware management — firmware updates are handled directly within DSM without drive removal.
Trade-offs
- High-throughput workloads — the 4 TB and 6 TB models are rated at 180 TB/year workload and 202 MB/s sustained transfer, which may be limiting for write-intensive applications.
- Non-Synology NAS systems — these drives are purpose-built and validated for Synology enclosures; compatibility with other platforms is not guaranteed by the vendor.
- Desktop or single-user direct-attached use — the drives are designed for always-on NAS environments, not casual personal storage.
- Enterprise or data-centre deployments — with a 3-year warranty and home/small office workload ratings, these are not positioned as enterprise-grade drives.
Using 100% conventional magnetic recording (CMR) technology, Plus Series disk drives ensure consistent write performance throughout their lifespans. Synology Plus Series drives are subjected to thorough compatibility and stress testing to ensure smooth 24/7 operation under multi-user workloads.
General
| Brand | Synology |
|---|---|
| Model | HAT3300-4T |
| Form Factor | 3.5" |
| Interface | SATA 6 Gb/s |
| Sector Size | 512e |
| Recording Technology | Conventional Magnetic Recording (CMR) |
| Drive Design | Air |
| Warranty | 3 Years |
Drive
| Capacity | 4 TB |
|---|---|
| Rotational Speed | 5,400 rpm |
| Cache | 256 MB |
Performance
| Max. Sustained Data Transfer Speed (Typ.) | 202 MB/s |
|---|
Reliability
| MTBF | 1,000,000 hours |
|---|---|
| Workload Rating | 180 TB/year |
General
| Brand | Synology |
|---|---|
| Model | HAT3300-6T |
| Form Factor | 3.5" |
| Interface | SATA 6 Gb/s |
| Sector Size | 512e |
| Recording Technology | Conventional Magnetic Recording (CMR) |
| Drive Design | Air |
| Warranty | 3 Years |
Drive
| Capacity | 6 TB |
|---|---|
| Rotational Speed | 5,400 rpm |
| Cache | 256 MB |
Performance
| Max. Sustained Data Transfer Speed (Typ.) | 202 MB/s |
|---|
Reliability
| MTBF | 1,000,000 hours |
|---|---|
| Workload Rating | 180 TB/year |
General
| Brand | Synology |
|---|---|
| Model | HAT3320-8T |
| Form Factor | 3.5" |
| Interface | SATA 6 Gb/s |
| Sector Size | 512e |
| Recording Technology | Conventional Magnetic Recording (CMR) |
| Drive Design | Air |
| Warranty | 3 Years |
Drive
| Capacity | 8 TB |
|---|---|
| Rotational Speed | 7,200 rpm |
| Cache | 256 MB |
Performance
| Max. Sustained Data Transfer Speed (Typ.) | 281 MB/s |
|---|
Power & environment
| Active Idle Power (Typ.) | 5.74 W |
|---|---|
| Avg Read/Write Power (Typ.) | 9.07 W |
Reliability
| MTBF | 1,000,000 hours |
|---|---|
| Workload Rating | 300 TB/year |
General
| Brand | Synology |
|---|---|
| Model | HAT3310-12T |
| Form Factor | 3.5" |
| Interface | SATA 6 Gb/s |
| Sector Size | 512e |
| Recording Technology | Conventional Magnetic Recording (CMR) |
| Drive Design | Helium-sealed |
| Warranty | 3 Years |
Drive
| Capacity | 12 TB |
|---|---|
| Rotational Speed | 7,200 rpm |
| Cache | 512 MB |
Performance
| Max. Sustained Data Transfer Speed (Typ.) | 281 MB/s |
|---|
Reliability
| MTBF | 1,200,000 hours |
|---|---|
| Workload Rating | 180 TB/year |
General
| Brand | Synology |
|---|---|
| Model | HAT3310-16T |
| Form Factor | 3.5" |
| Interface | SATA 6 Gb/s |
| Sector Size | 512e |
| Recording Technology | Conventional Magnetic Recording (CMR) |
| Drive Design | Helium-sealed |
| Warranty | 3 Years |
Drive
| Capacity | 16 TB |
|---|---|
| Rotational Speed | 7,200 rpm |
| Cache | 512 MB |
Performance
| Max. Sustained Data Transfer Speed (Typ.) | 281 MB/s |
|---|
Reliability
| MTBF | 1,200,000 hours |
|---|---|
| Workload Rating | 180 TB/year |
General
| Brand | Synology |
|---|---|
| Model | HAT3320-20T |
| Form Factor | 3.5" |
| Interface | SATA 6 Gb/s |
| Sector Size | 512e |
| Recording Technology | Conventional Magnetic Recording (CMR) |
| Drive Design | Helium-sealed |
| Warranty | 3 Years |
Drive
| Capacity | 20 TB |
|---|---|
| Rotational Speed | 7,200 rpm |
| Cache | 1 GB |
Performance
| Max. Sustained Data Transfer Speed (Typ.) | 295 MB/s |
|---|
Reliability
| MTBF | 1,200,000 hours |
|---|---|
| Workload Rating | 300 TB/year |
Every option side by side. Rows that differ between them are highlighted — those are the ones worth deciding on.
| 4 TB - HAT3300-4T | 6 TB - HAT3300-6T | 8 TB - HAT3320-8T | 12 TB - HAT3310-12T | 16 TB - HAT3310-16T | 20 TB - HAT3320-20T | |
|---|---|---|---|---|---|---|
| Capacity | 4 TB | 6 TB | 8 TB | 12 TB | 16 TB | 20 TB |
| Rotational Speed | 5,400 rpm | 5,400 rpm | 7,200 rpm | 7,200 rpm | 7,200 rpm | 7,200 rpm |
| Cache | 256 MB | 256 MB | 256 MB | 512 MB | 512 MB | 1 GB |
| Max. Sustained Transfer Speed | 202 MB/s | 202 MB/s | 281 MB/s | 281 MB/s | 281 MB/s | 295 MB/s |
| Drive Design | Air | Air | Air | Helium-sealed | Helium-sealed | Helium-sealed |
| MTBF | 1,000,000 hours | 1,000,000 hours | 1,000,000 hours | 1,200,000 hours | 1,200,000 hours | 1,200,000 hours |
| Workload Rating | 180 TB/year | 180 TB/year | 300 TB/year | 180 TB/year | 180 TB/year | 300 TB/year |
| Warranty | 3 Years | 3 Years | 3 Years | 3 Years | 3 Years | 3 Years |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.