DiskStation® DS120j

Your personal cloud solution for effortless data management.

DS120j
DS120j

An ideal first NAS for everyone

DS120j is a centralized storage solution that allows you to share family photos and videos to all household devices, such as computers and mobile phones.

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Fast Performance

Over 112 MB/s sequential reading

Eco-friendly

9.81 watts under full operation

Seamless integration with your mobile devices

Synology mobile applications are designed to allow quick and secure access to your data wherever you are.

UI for DS audio
UI for DS Photo
UI for DS video

Centralized backup solution for your digital devices

Synology's comprehensive multi-version backup solution protects your digital assets on computers (Windows/Mac) and mobile phones (Android/iOS) against malicious attacks, including the rising encryption-based ransomware threats.

Centralized backup solution for your digital devices

Easy file access with QuickConnect

Access files on your Synology NAS over the Internet without the hassle of setting up port forwarding rules, DDNS, or other complicated network settings. QuickConnect allows you to connect via a secure, customizable address, so that you can instantly access media and work files on any Internet-connected device with no additional charge.

Easy file access with QuickConnect

Powered by Synology DiskStation Manager

File Server/Management

File Server/Management

Powerful built-in file management and sharing services.

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Multimedia

Multimedia

Complete multimedia solution for management, streaming, and playback.

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Hyper Backup

Hyper Backup

Store multiple backup versions with block-level incremental data backup and cross-version deduplication.

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DSM UI

DSM UI

Award-winning operating system with an intuitive user interface and powerful capabilities.

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Security

Security

Secure data with comprehensive built-in security tools to protect your devices against evolving threats.

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All-in-one server

All-in-one server

Save additional investment by integrating various network services, web/mail services, management applications into your NAS.

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Works best with Synology drives

Leverage high sustained performance and reliability with well-engineered drives designed specially for Synology systems.

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DiskStation® DS120j

product DS120j front view photo
product DS120j back view photo
  • 1 Status indicator
  • 2 LAN indicator
  • 3 Drive status indicator
  • 4 Power button and indicator
  • 5 System fan
  • 6 USB 2.0 port
  • 7 Kensington Security Slot
  • 8 Reset button
  • 9 1GbE RJ-45 port
  • 10 Power port
Hardware Specifications
CPU
CPU
CPU Model Marvell Armada 3700 88F3720
CPU Quantity 1
CPU Architecture 64-bit
CPU Frequency 2-core 800 MHz
Hardware Encryption Engine
Memory
Memory
System Memory 512 MB DDR3L non-ECC
Total Memory Slots 0
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.
Storage
Storage
Drive Bays 1
Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD (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
External Ports
RJ-45 1GbE LAN Port 1
USB 2.0 Port 2
Appearance
Appearance
Size (Height x Width x Depth) 166 mm x 71 mm x 224 mm
Weight 0.7 kg
Others
Others
System Fan 60 mm x 60 mm x 1 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Low-power Mode
Power Recovery
Noise Level* 16.9 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 36 W
AC Input Power Voltage 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption 9.81 W (Access)
4.68 W (HDD Hibernation)
British Thermal Unit 33.47 BTU/hr (Access)
15.97 BTU/hr (HDD Hibernation)
Notes
  • Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
  • 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%
Temperature
Temperature
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
Certification
Certification
  • EAC
  • CCC
  • KC
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
Warranty
Warranty
2-year hardware warranty, extendable to 4 years with Extended Warranty Plus
Notes
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • Extended Warranty Plus is only available in Europe and North America. Refer to the Extended Warranty Plus website for details on supported countries/regions. (Learn more)
Environment
Environment
RoHS Compliant
Packaging Content
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Adapter X 1
  • RJ-45 LAN Cable X 1
  • Quick Installation Guide X 1
Optional Accessories
Optional Accessories

Notes:

  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.