
Buffalo LinkStation LS720
Score: 59/100
Synology DS223j 2-bay
Score: 70/100Rankings

The DS223j is a compact, diskless two-bay NAS that delivers the full DSM experience, RAID 1 redundancy and low power draw. It's ideal for basic file storage and backup, though its single-gigabit port and limited RAM keep it from handling demanding media tasks.

The Buffalo LinkStation 720 is a 2-bay NAS that ships with drives pre-configured in RAID 1, offering simple plug-and-play storage with 2.5 GbE and basic backup features.
| Attribute | ![]() | ![]() |
|---|---|---|
16 TBbest | — | |
2best | 2best | |
2.5 Gbpsbest | 1 Gbps | |
6best | 4 | |
2 GBbest | 1 GB | |
| ↓ lower better | 48 W | 16.31 Wbest |
| ↓ lower better | — | 18.2 dBbest |
2 yearsbest | 2 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Security(1) | ||
OS Compatibility | Proprietary | DSM |
Performance(4) | ||
CPU Cores | 6 | 4 |
System Memory (GB) | 2 GB | 1 GB |
Ethernet Speed (Gbps) | 2.5 Gbps | 1 Gbps |
Power Consumption (Active) (W) | 48 W | 16.31 W |
Build & Design(1) | ||
Weight (kg) | 2.31 kg | 0.87 kg |
Connectivity(1) | ||
USB Ports | 3 | 2 |
Storage & Capacity(2) | ||
RAID Support | RAID 0, RAID 1, JBOD | RAID 0,1,Basic,Hybrid RAID,JBOD |
Supported Drive Types | SATA III 3.5" HDD | 3.5" SATA HDD,2.5" SATA SSD |

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

Reviewers commend its plug-and-play simplicity and solid transfer speeds, but note the lack of an app ecosystem and limited advanced features.
Users love the quick setup and RAID-1 reliability, while some complain about fan noise and limited extensibility.

“"Preinstalled drives with RAID 1 redundancy out of the box"”

“"The fan can be "sometimes noisy""”

“"Getting the NAS operational in under 15 minutes"”




Professional reviewers view the DS223j as a solid successor to the DS220j, highlighting the faster Realtek quad-core CPU and polished DSM experience, but note the lack of tool-less drive bays and limited media-streaming capability.
Everyday users appreciate the straightforward setup, reliable file access, and the ability to replace cloud storage costs with a one-time purchase, while recurring complaints focus on the noisy fan during spin-down, limited RAM, and difficulties with H.265 video playback.