Buffalo TeraStation TS3420R
Score: 74/100
Buffalo TS3430D1604S
Score: 73/100Rankings
A secure, rack-mountable 4-bay NAS with built-in drives, 2.5 GbE networking and strong encryption, aimed at small offices and home labs, but constrained by modest memory and lack of performance-enhancing features.

The TeraStation Essentials 2025 is a 4-bay NAS with pre-installed HDDs, 2.5 GbE networking and strong security features, aimed at small-office environments that value data protection and remote management. It offers solid reliability but lacks advanced features like snapshots and high-speed networking.
| Attribute | Buffalo TeraStation TS3420R | ![]() |
|---|---|---|
32 TBbest | 16 TB | |
4best | 4best | |
2.5 Gbpsbest | 2.5 Gbpsbest | |
— | 4best | |
1 GB | 2 GBbest | |
| ↓ lower better | 100 W | 85 Wbest |
3 yearsbest | 3 yearsbest | |
| ↓ lower better | 7.7 kg | 7.08 kgbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | Buffalo TeraStation TS3420R | ![]() |
|---|---|---|
Performance(3) | ||
CPU Model | Annapurna Labs Alpine AL214 | Annapurna Labs Alpine AL-214 |
System Memory (GB) | 1 GB | 2 GB |
Power Consumption (Active) (W) | 100 W | 85 W |
Build & Design(1) | ||
Weight (kg) | 7.7 kg | 7.08 kg |
Storage & Capacity(3) | ||
Maximum Raw Capacity (TB) | 32 TB | 16 TB |
RAID Support | RAID 0,1,5,6,10,JBOD | RAID 0, 1, 5, 6, 10, JBOD |
Supported Drive Types | 3.5" SATA III | HDD (CMR) |

Products in the top-left offer the best value (high score, low price).
Professional reviewers view the TeraStation Essentials as a solid, security-focused NAS that delivers enterprise-grade features at a modest price, highlighting its built-in drives, 2.5 GbE port and comprehensive warranty, while noting the omission of iSCSI, failover and SSD caching as trade-offs for its lower cost.
Everyday users praise the device for its straightforward, out-of-the-box setup, reliable support and robust security, but commonly express concerns about limited memory, the default RAID5 capacity reduction and the lack of performance-enhancing features such as SSD cache or 10 GbE.

Professional reviewers praise the TeraStation Essentials for its security-first architecture, reliable Japanese build quality, and responsive 24/7 US support, positioning it as a solid, low-maintenance NAS for SMBs that value data protection over advanced feature sets.
Everyday users highlight the device's ease of setup, robust encryption, and dependable remote management, while noting the lack of a mobile app and slower RAID rebuilds as drawbacks.
“Pre-configured RAID5 with four 2 TB drives for immediate plug-and-play deployment”
“Only 1 GB DDR3 RAM may limit performance under heavy concurrent access”
“Hybrid cloud integration with Amazon S3, Dropbox, Azure and OneDrive”
