Specifications side by side
Synology DS223 vs Synology DS223j
Compare the enclosure, then check the cost and compatibility of its drives.
Synology DS223
A two-bay file and photo server with more factory memory than the DS223j, but the same single gigabit connection.
Synology DS223j
An entry-level two-bay DSM box for basic sharing and backups. Check memory and application requirements before buying for multiple services.
| Specification | DS223 | DS223j |
|---|---|---|
| SATA bays | 2 | 2 |
| NVMe slots | 0 | 0 |
| Connection | 1 × 1GbE | 1 × 1GbE |
| Drive format | 3.5-inch SATA HDD / 2.5-inch SATA SSD | 3.5-inch SATA HDD / 2.5-inch SATA SSD |
| Factory memory | 2GB DDR4 | 1GB DDR4 |
| Included storage | Diskless; drives sold separately | Diskless; drives sold separately |
| Processor | Realtek RTD1619B | Realtek RTD1619B |
| RAID | Software-managed; modes depend on installed drives and OS version | Software-managed; modes depend on installed drives and OS version |
| System | DSM | DSM |
DS223 buying checks
- Check Synology’s current compatibility list for the exact drive, NAS model and DSM version.
Reviewed 2026-09-13. Manufacturer specifications
DS223j buying checks
- Check Synology’s current compatibility list for the exact drive, NAS model and DSM version.
Reviewed 2026-09-13. Manufacturer specifications
Highlighted rows differ. Manufacturer specifications are not benchmark results or a reliability ranking. Network and USB ratings describe the connection; actual transfer speed depends on the host, drives and workload.
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