
Asustor AS6704T
Score: 79/100
Buffalo TS3430D1604S
Score: 73/100Rankings

The Asustor Lockerstor 4 Gen2 (AS6704T) is a high-performance 4-bay NAS aimed at power users and small businesses, offering up to 88 TB raw capacity, extensive RAID options, dual 2.5 GbE networking and four M.2 NVMe slots. It delivers fast file transfers and 4K media handling, though it lacks native 10 GbE and requires tools for drive installation.

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 | ![]() | ![]() |
|---|---|---|
88 TBbest | 16 TB | |
4best | 4best | |
2.5 Gbpsbest | 2.5 Gbpsbest | |
4best | 4best | |
4 GBbest | 2 GB | |
| ↓ lower better | 35 Wbest | 85 W |
| ↓ lower better | 17.6 dBbest | — |
3 yearsbest | 3 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(3) | ||
CPU Model | Intel Celeron N5105 | Annapurna Labs Alpine AL-214 |
System Memory (GB) | 4 GB | 2 GB |
Power Consumption (Active) (W) | 35 W | 85 W |
Build & Design(1) | ||
Weight (kg) | 3.5 kg | 7.08 kg |
Connectivity(1) | ||
Link Aggregation Support | true | false |
Storage & Capacity(3) | ||
Maximum Raw Capacity (TB) | 88 TB | 16 TB |
RAID Support | Single, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 | RAID 0, 1, 5, 6, 10, JBOD |
Supported Drive Types | 3.5"/2.5" SATA HDD/SSD | HDD (CMR) |


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

Professional reviewers rate the AS6704T extremely highly, with PCMag giving it a perfect 5.0/5.0 "Exemplary" score for its blazing speeds, robust hardware and extensive app library.
Everyday users love the AS6704T's raw performance, flexible M.2 and 2.5 GbE options, and the breadth of apps that let them run Plex, Docker and VMs with ease.

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.
“high-performance design for intensive tasks like video editing”

“up to 590 MB/s read and 555 MB/s write speeds”

“smooth 4K streaming and transcoding”

