
Buffalo TS3430DN3204
Score: 75/100
Synology DS425+
Score: 65/100Rankings

The TeraStation 3430DN is a 4-bay desktop NAS aimed at SMBs, offering 32 TB of storage, strong security features, and dual Ethernet ports. It provides reliable 24/7 operation but is limited by modest RAM and lack of SSD caching.

The DS425+ is a 4-bay NAS with 2.5 GbE networking and dual M.2 slots, offering quiet operation and DSM 7.2+ features, aimed at home offices and small businesses.
| Attribute | ![]() | ![]() |
|---|---|---|
32 TB | 80 TBbest | |
4best | 4best | |
2.5 Gbpsbest | 2.5 Gbpsbest | |
4best | 4best | |
2 GBbest | 2 GBbest | |
| ↓ lower better | — | 28.25 Wbest |
| ↓ lower better | — | 21.6 dBbest |
3 yearsbest | 3 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Security(1) | ||
OS Compatibility | Windows 10/11/Server 2016–2022, macOS 12+, Chrome OS | DSM 7.2+ |
Performance(1) | ||
CPU Model | Annapurna Labs Alpine AL-524 Quad-Core CPU | Intel Celeron J4125 |
Build & Design(1) | ||
Weight (kg) | 7.30 kg | 2.18 kg |
Storage & Capacity(3) | ||
Maximum Raw Capacity (TB) | 32 TB | 80 TB |
RAID Support | RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, JBOD | SHR, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 |
Supported Drive Types | 3.5" SATA III | 3.5"/2.5" SATA |


Products in the top-left offer the best value (high score, low price).

Professional reviewers commend the TeraStation 3430DN for its solid reliability, strong security posture and straightforward deployment, noting the 2.5 GbE port and closed-system architecture set it apart in the SMB segment.
Everyday users appreciate the plug-and-play experience, dependable uptime, and robust security features, especially the ransomware detection, while noting fan noise and limited RAM as drawbacks.

Professional reviewers consider the DS425+ an evolutionary update that modernizes networking with 2.5 GbE and adds dual M.2 slots, but they caution that the aging J4125 processor and limited memory cap its performance for demanding virtualization or transcoding tasks.
Everyday users appreciate the silent, "library-quiet" operation and the speed boost from 2.5 GbE, finding the setup straightforward and the DSM interface user-friendly, while noting the lack of 10 GbE and occasional instability with the USB-C expansion.
“Set up in under 30 minutes. Perfect for our 20-person office. Security features give us confidence.”

“The fan can get noisy during heavy use, but overall it's reliable.”

“I wish it had SSD caching for faster access to hot files.”


