Refurbished DiskStation DS120j
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Refurbished DiskStation DS120j

Your personal cloud solution for effortless data management.

DS120j
DS120j
Refurbished DiskStation DS920+

Synology Certified Refurbished

Access Synology solutions in a cost-effective and environmentally responsible way. All certified refurbished products are put through extensive testing, comply with stringent quality standards, and come with a 2-year warranty.

 More about Synology Certified Refurbished

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.

Download Datasheet

Fast Performance

Over 112 MB/s sequential reading

Eco-friendly

9.81 watts under full operation

Productivity in the private cloud

DS120j is designed for professionals to share, sync, and work together more efficiently.

Anytime, anywhere access

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

Anytime, anywhere access

Intelligent backup and syncing

Safeguard against ransomware attacks or accidental deletion with real-time or scheduled folder backups. Reduce local storage use with on-demand sync, only downloading files as needed.

Intelligent backup and syncing

Seamless cloud syncing

Synchronize files between your DS120j and public cloud services using Synology Cloud Sync. Retain local backup copies of data stored on Google Drive, Dropbox, Microsoft OneDrive, and more, and ensure data ownership.

Seamless cloud syncing

Sync up with teams, even at the edge

Automatically keep data synchronized between Synology systems in different locations with Synology Drive ShareSync to improve cross-site workflows.

Sync up with teams, even at the edge

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.

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

Works best with Synology drives

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

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Hardware Overview

product DS120j front view photo
product DS120j back view photo
  • 1Status indicator
  • 2LAN indicator
  • 3Drive status indicator
  • 4Power button and indicator
  • 5System fan
  • 6USB 2.0 port
  • 7Kensington Security Slot
  • 8Reset button
  • 91GbE RJ-45 port
  • 10Power port
Hardware Specifications
CPU
CPU
CPU Model Marvell Armada 3700 88F3720
CPU Quantity 1
CPU Core 2
CPU Architecture 64-bit
CPU Frequency 800 MHz
Hardware Encryption Engine
Memory
Memory
System Memory 512 MB DDR3 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.
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 watts
AC Input Power Voltage 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption 9.81 watts (Access)
4.68 watts (HDD Hibernation)
British Thermal Unit 33.45 BTU/hr (Access)
15.96 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 Years
Notes The warranty period starts from the purchase date as stated on your purchase receipt. (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.