2-bay entry-level desktop NAS
Synology DS223j 2-bay Entry-level Desktop NAS
A two-bay NAS for straightforward file sharing, private cloud access and backup, powered by a Realtek RTD1619B processor with 1 GB DDR4 memory.
- Processor
- Realtek RTD1619B
- Memory
- 1 GB DDR4 non-ECC
- Drive bays
- 2
- Networking
- 1 × 1GbE
A simple starting point for shared storage and backup
The Synology DS223j is designed for households and small teams that want files and media accessible across computers, phones and browsers. Its two-bay layout supports a practical introduction to centralised storage without adding unsupported expansion claims.
Two-bay storage
Use supported SATA drives to centralise household or small-team data.
Multi-platform access
Manage files and media through supported desktop, mobile and browser tools.
Private cloud control
Keep shared data on a system you manage rather than relying only on public-cloud storage.
Backup destination
Collect copies of important computer and mobile files in one organised location.
Compact footprint
The 165 × 100 × 225.5 mm enclosure fits easily into a home or small workspace.
Quiet operation
A supplied 18.2 dB(A) noise rating supports placement in everyday environments.
Who is the Synology DS223j best for?
A strong choice for
- First-time NAS buyers
- Household file and photo storage
- Small-team document sharing
- Basic computer and mobile backup
- Compact private cloud deployments
Consider another model if you need
- You need hot-swappable drive bays
- You require expandable memory
- You need multiple network ports
- You need PCIe or drive-bay expansion
Key specifications
- Model
- DS223j
- Product type
- 2-bay entry-level desktop NAS
- Processor
- Realtek RTD1619B
- CPU cores
- 4
- CPU frequency
- 1.7 GHz
- System memory
- 1 GB DDR4 non-ECC
- Drive bays
- 2
- Drive categories
- | 3.5" SATA HDD; 2.5" SATA SSD (with optional 2.5" Disk Holder)
- Built-in network
- 1 × 1GbE
- USB ports
- 2 × USB 3.2 Gen 1
- Dimensions
- Not specified
- Weight
- 0.88 kg
- Warranty
- 2-year hardware warranty, extendable to 4 years with extended warranty plus
Full technical specifications
Processor, memory and storage
| CPU Model | Realtek RTD1619B |
|---|---|
| CPU Quantity | 1 |
| CPU Core | 4 |
| CPU Threads | 4 |
| CPU Architecture | 64-bit |
| CPU Frequency | 1.7 GHz |
| Hardware Encryption Engine | Supported |
| System Memory | 1 GB DDR4 non-ECC |
| Memory notes | Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance. |
| Drive Bays | 2 |
| Drive Type | | 3.5" SATA HDD; 2.5" SATA SSD (with optional 2.5" Disk Holder) |
| Hot Swappable Drive* | - |
Network, ports and expansion
| RJ-45 1GbE LAN Port | 1 |
|---|---|
| USB 3.2 Gen 1 Port* | 2 |
| External Ports notes | | This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes.; The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019. |
Physical design and power
| Size (Height × Width × Depth) | 165 mm × 100 mm × 225.5 mm |
|---|---|
| Weight | 0.88 kg |
| System Fan | 92 mm × 92 mm × 1 pcs |
| Fan Speed Mode | | Full-Speed Mode; Cool Mode; Quiet Mode; Low-power Mode |
| Brightness Adjustable Front LED Indicators | Supported |
| Power Recovery | Supported |
| Noise Level* | 18.2 dB(A) |
| Scheduled Power On / Off | Supported |
| Wake on LAN / WAN | Supported |
| Power Supply Unit / Adapter | 60 watts |
| AC Input Power Voltage | 100V to 240V AC |
| Power Frequency | 50/60 Hz, Single Phase |
| Power Consumption | 16.31 watts (Access); 4 watts (HDD Hibernation) |
| British Thermal Unit | 55.62 BTU/hr (Access); 13.64 BTU/hr (HDD Hibernation) |
| Others notes | |; | Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75°C; Humidity: 58.2-61.8% |
Environment, warranty and package
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
|---|---|
| Storage Temperature | -20°C to 60°C (-5°F to 140°F) |
| Operating Humidity | 8% to 80% RH |
| Storage Humidity | 5% to 95% RH |
| Certification | | FCC; CE; BSMI; VCCI; RCM; UKCA; EAC; CCC; KC; BIS |
| Warranty | 2-year hardware warranty, extendable to 4 years with extended warranty plus |
| Warranty notes | | The warranty period starts from the purchase date as stated on your purchase receipt. | |
| Environment | RoHS Compliant |
| Packaging Content | | Main Unit X 1; Accessory Pack X 1; AC Power Adapter X 1; AC Power Cord X 1; RJ-45 LAN Cable X 1; Quick Installation Guide X 1 |
Frequently asked questions about the Synology DS223j
What is the Synology DS223j?
The Synology DS223j is a 2-bay entry-level desktop NAS for first-time nas buyers, household file and photo storage, small-team document sharing.
Which processor is in the Synology DS223j?
It uses the Realtek RTD1619B with 4 cores at 1.7 GHz.
How much memory does the Synology DS223j include?
It includes 1 GB DDR4 non-ECC. No higher memory capacity is stated in the verified hardware specification.
How many drive bays does the Synology DS223j have?
It has 2 internal drive bays.
Which drive types does the Synology DS223j support?
| 3.5" SATA HDD; 2.5" SATA SSD (with optional 2.5" Disk Holder). Confirm exact drive models on Synology’s compatibility list.
What networking is built into the Synology DS223j?
The verified built-in network interfaces are 1 × 1GbE.
What external ports does the Synology DS223j provide?
It provides 2 USB 3.2 Gen 1 ports alongside 1 × 1GbE.
Does the Synology DS223j include storage drives?
No. This listing identifies the Synology DS223j as diskless, so compatible drives are selected separately.
What are the Synology DS223j dimensions?
It measures Not specified and weighs 0.88 kg.
What warranty applies to the Synology DS223j?
Synology specifies 2-year hardware warranty, extendable to 4 years with extended warranty plus. Warranty-extension availability depends on region.
- DS223j is listed as diskless; compatible storage drives are selected separately.
- Confirm exact drives, memory and accessories on Synology’s compatibility list for DS223j.
- Actual usable capacity and performance depend on installed drives, storage configuration, workloads and network environment.
