Synology DS223j


J Series DiskStation DS223j

Compact, quiet, and energy-efficient storage

CPU: Realtek RTD1619B 4-core 1.7 GHz

RAM: 1 GB DDR4 non-ECC 

Gigabit LAN Port x1

USB 3.2 Gen 1 Port x2

2 Years Warranty

----- Reference -----

Synology DS223j, 2 Bays NAS, Compact, quiet, and energy-efficient storage, CPU: Realtek RTD1619B 4-core 1.7 GHz, RAM: 1 GB DDR4 non-ECC, Gigabit LAN Port x1, USB 3.2 Gen 1 Port x2, 2 Years Warranty

Drive Bays : 2-Bays NAS
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Synology DiskStation DS223j

Compact, quiet, and energy-efficient storage


All-in-one platform to organize your data

Download Datasheet

Secure private cloud

Secure private cloud

Anywhere, anytime secure access to all your data.

Easy sharing and syncing

Easy sharing and syncing

Safely access and share files and media from anywhere.

Comprehensive data protection

Comprehensive data protection

Hardware and software engineered to protect your data — trusted by millions.

Built for sharing

DS223j is designed for small teams to share, sync, and collaborate more efficiently.

Multi-platform file access

Manage your files and media from anywhere with Synology Drive. Available on PC, Mac, Linux, Chromebook, Android, iOS, or any device equipped with a browser.

Multi-platform file access

Real-time collaboration

Stay productive while working in a team or with your clients. Work together across different platforms using Synology Office.

Real-time collaboration

Sync across sites

Keeping data synced between different sites has never been easier. Synology Drive ShareSync keeps files and folders synchronized across Synology systems.

Sync across sites

Seamless synchronization to clouds

Sync files between your private cloud and public cloud storage platforms, including Google Drive, Dropbox, Microsoft OneDrive, and more with Synology Cloud Sync. Retain local copies of your cloud data to centralize management and achieve data ownership.

Safeguard your data

Your data in safe hands with Btrfs1

The advanced Btrfs file system helps safeguard data against corruption through file self-healing and allows for the reversal of unintentional or malicious changes through fast snapshot technology. Learn more

Safeguard your data

Store, share, and protect

Configure your DS223j to manage all your documents, photos, and other files, or protect your physical assets with professional video surveillance.

Photo management

Manage your photo collection

Organize your photos and videos with smart and intuitive features. Browse automatically generated albums using facial recognition, geolocation, tags, and more.

Manage your photo collection

Sharing made safer and easier

Securely share media with colleagues or clients while leveraging privacy-focused options for your peace of mind. Collaborate with selected users on a folder-based media library by creating a Shared Space.

Data protection

Automated media backup

Automatically upload photos and videos taken on your mobile device to your private cloud with Synology Photo or Synology Drive

Automated media backup

Protection against cyberattacks

Leverage to protect data from ransomware attacks or accidental deletion with real-time or scheduled backup of your PC folders.
Protection against cyberattacks

Video surveillance

Wide compatibility

Choose from over 8,300 IP cameras or ONVIF devices compatible with Synology Surveillance Station to keep your premises secure.

Wide compatibility

Universal access

Watch live camera streams through web browsers, desktop clients, or mobile apps. Get notified of events and take immediate action.
Universal access

Add an extra layer of protection

Perform full Synology system backups

Back up your entire Synology device, including system settings and applications, or select specific folders. Transfer all backup data to multiple destinations using Hyper Backup


Keep your data safe with snapshots

Take your data protection to the next level by creating automatic point-in-time snapshots of shared folders that can be copied off-site and rapidly restored using Snapshot Replication

Perform full Synology system backups
Keep your data safe with snapshots

Extra protection with Extended Warranty Plus

Extend the standard 2-year hardware warranty4 of your DS223j with 2 more years of Synology-certified support and premium services to help you recover faster in the event of disaster.5

DiskStation DS223j

product DS223j front view photo   product DS223j back view photo

Status Indicator

LAN Indicator

Drive Status Indicators

Power Button and Indicator


1GbE RJ-45 Port

USB 3.2 Gen 1 Ports

Reset Button

Power Port

10  Kensington Security Slot

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Hardware Specifications

CPU Model Realtek RTD1619B
CPU Quantity 1
CPU Architecture 64-bit
CPU Frequency 4-core 1.7 GHz
Hardware Encryption Engine
System Memory 1 GB DDR4 non-ECC
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
Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA SSD (with optional 2.5" Disk Holder)
Hot Swappable Drive* -
Notes "Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
External Ports
RJ-45 1GbE LAN Port* 1
USB 3.2 Gen 1 Port* 2
  • 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.
File System
Internal Drives
  • Btrfs
  • EXT4
External Drives
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT
Notes Btrfs file system is available from DSM 7.2-64570.
Size (Height x Width x Depth) 165 mm x 100 mm x 225.5 mm
Weight 0.88 kg
System Fan 92 mm x 92 mm x 1 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Low-power Mode
Brightness Adjustable Front LED Indicators
Power Recovery
Noise Level* 18.2 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 60 W
AC Input Power Voltage 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption 16.31 W (Access)
4 W (HDD Hibernation)
British Thermal Unit 55.62 BTU/hr (Access)
13.64 BTU/hr (HDD Hibernation)
  • For more information on how power consumption is measured, refer to this article.
  • 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%
Operating Temperature 0°C to 40°C (32°F to 104°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F)
Relative Humidity 5% to 95% RH
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
2-year hardware warranty, extendable to 4 years with Extended Warranty Plus
  • Availability varies by region. Before purchasing, please visit the official web pages of EW201/202 and Extended Warranty Plus for a list of eligible regions.
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
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
Optional Accessories
  • 3.5" SATA HDD: HAT3300
  • Surveillance Device License Pack
  • Disk Holder: Type C


  1. Model specifications are subject to change without prior notice.
  2. The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time.
  3. The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations.
  4. If usage requirements exceed the specifications above, please contact our regional partners for professional advice.


: DS223j
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