
Synology DS223
Score: 61/100
Synology DS425+
Score: 65/100Rankings

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.

The DS223 is a compact 2-bay NAS that offers a rich DSM software suite, low power draw and quiet operation, targeting home users and small offices needing reliable backup and media streaming.
| Attribute | ![]() | ![]() |
|---|---|---|
36 TB | 80 TBbest | |
2 | 4best | |
1 Gbps | 2.5 Gbpsbest | |
4best | 4best | |
2 GBbest | 2 GBbest | |
| ↓ lower better | 17.343 Wbest | 28.25 W |
| ↓ lower better | 14.6 dBbest | 21.6 dB |
2 years | 3 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Security(1) | ||
OS Compatibility | DSM | DSM 7.2+ |
Performance(4) | ||
CPU Model | Realtek RTD1619B | Intel Celeron J4125 |
Ethernet Speed (Gbps) | 1 Gbps | 2.5 Gbps |
Power Consumption (Active) (W) | 17.343 W | 28.25 W |
Noise Level (dB) | 14.6 dB | 21.6 dB |
Build & Design(3) | ||
Weight (kg) | 1.28 kg | 2.18 kg |
Power Supply Type | 60W | External 90W AC adapter |
Warranty Period (years) | 2 years | 3 years |
Connectivity(1) | ||
USB Ports | 3 | 2 |
Storage & Capacity(4) | ||
Maximum Raw Capacity (TB) | 36 TB | 80 TB |
Drive Bays | 2 | 4 |
RAID Support | RAID 0,RAID 1,Basic,JBOD,SHR | SHR, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 |
Supported Drive Types | 3.5" SATA HDD,2.5" SATA SSD | 3.5"/2.5" SATA |


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

Professional reviewers describe the DS223 as an ideal entry-level NAS that prioritises reliability, a rich DSM software ecosystem and low noise over raw processing power, while noting limitations in transcoding and virtualization.
Everyday users praise its effortless backup setup, quiet operation and intuitive DSM interface, but note the limited RAM and modest CPU for heavier workloads.

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.
“Perfect for home backups - set it and forget it”

“DSM is the best NAS OS out there - so many apps and easy to use”

“Very quiet and small - fits on my desk without any noise”


