
Synology DS223
Score: 77/100
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 Synology DiskStation DS223 is an entry-level 2-bay NAS that delivers solid performance, quiet operation, and a rich feature set for home backups and media streaming. Its limitations include non-upgradeable RAM, a single gigabit Ethernet port, and non-hot-swap drive bays. Ideal for households seeking reliable, low-power storage with extensive DSM apps.
| Attribute | ![]() | ![]() |
|---|---|---|
108 TBbest | — | |
2 | 6best | |
4best | 4best | |
1.7 GHz | 2 GHzbest | |
2 GB | 4 GBbest | |
— | 590 MB/sbest | |
— | 583 MB/sbest | |
3 | 4best |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage(1) | ||
Drive Bays | 2 | 6 |
Performance(3) | ||
CPU Model | Realtek RTD1619B | Intel Celeron N5105 |
CPU Clock Speed (GHz) | 1.7 GHz | 2.0 GHz |
Memory (RAM) (GB) | 2 GB | 4 GB |
Connectivity(3) | ||
USB Ports | 3 | 4 |
Ethernet Ports | 1 | 2 |
Ethernet Speed (Gbps) | 1 Gbps | 2.5 Gbps |
Power(2) | ||
Power Consumption (Idle) (W) | 4.08 W | 0.83 W |
Power Consumption (Active) (W) | 17.343 W | 18.2 W |
Build & Design(2) | ||
Weight (kg) | 1.28 kg | 1.35 kg |
Dimensions (H×W×D) (cm) | 10.8×23.3×16.5 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 position the DS223 as a polished, entry-level NAS that excels in ease of use, low power draw, and a rich DSM app ecosystem, making it a solid choice for home backups, media streaming, and basic surveillance, though the fixed RAM and single gigabit port may limit more demanding scenarios.
Everyday users praise the DS223 for its simple setup, quiet operation, and reliable media and backup features, while recurring concerns focus on the non-upgradable memory, single network port, and the inconvenience of non-hot-swap drive bays.


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.