
Asustor Lockerstor 4 Gen2 AS6704T
Score: 73/100
Asustor Flashstor 6 FS6706T
Score: 83/100Rankings

The ASUSTOR Flashstor FS6706T is a compact 6-bay all-SSD NAS delivering blazing 2.5 GbE performance and 4K transcoding. Its limitations include a modest 4 GB RAM base and the inability to use HDDs, which may restrict capacity flexibility. Best suited for content creators and small-to-medium businesses that prioritize speed over massive raw capacity.

The ASUSTOR Lockerstor 4 Gen2 is a 4-bay NAS powered by a quad-core Celeron, dual 2.5 GbE and four M.2 NVMe slots, aimed at home and small-office creators. Its limitations include lack of native 10 GbE and sparse power/weight data. It fits users who want flexible SSD caching and Docker support without needing enterprise-grade networking.
| Attribute | ![]() | ![]() |
|---|---|---|
4 | 6best | |
4best | 4best | |
2.9 GHzbest | 2 GHz | |
4 GBbest | 4 GBbest | |
— | 590 MB/sbest | |
— | 583 MB/sbest | |
2 | 4best | |
2best | 2best |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage(1) | ||
Drive Bays | 4 | 6 |
Performance(1) | ||
CPU Clock Speed (GHz) | 2.9 GHz | 2.0 GHz |
Connectivity(1) | ||
USB Ports | 2 | 4 |
Build & Design(2) | ||
Weight (kg) | 3.5 kg | 1.35 kg |
Dimensions (H×W×D) (cm) | 32 x 30 x 24 cm cm | 30.7×4.8×19.3 cm cm |

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

Professional reviewers commend the AS6704T for its powerful N5105 CPU, dual 2.5 GbE ports, and extensive PCIe and M.2 expansion options, calling it an efficient platform for content creation and future-proof upgrades. They also praise the quiet cooling system and modern software stack, while noting that full performance hinges on user-installed RAM and optional 10 GbE cards, and that missing power and weight data limit planning.
Everyday users praise the NAS for its easy, tool-less installation, fast M.2 caching, and reliable 4K streaming over a robust 2.5 GbE connection. However, they express frustration over the need for DIY hardware upgrades to reach peak performance and the lack of clear power and weight specifications.


Professional reviewers commend the FS6706T for its blistering all-flash performance that pushes the limits of 2.5 GbE, its silent operation, and robust 4K transcoding for Plex streaming, while noting the base 4 GB RAM and lack of HDD support as trade-offs.
Home users and small-business owners praise the fast SSD speeds, quiet operation and low energy use, but note occasional concerns about limited memory and the inability to add traditional hard drives.