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Synology DiskStation DS420j
Synology DiskStation DS420j
Synology DiskStation DS420j

Synology DiskStation DS420j

$510.00 $498.00

Build a private cloud for your home

DS420j is a 4-bay desktop NAS designed for home data backup, file syncing, and sharing. Supporting up to 64 TB raw capacity, you can easily centralize all your multimedia collections.

Download Datasheet

CPU

64-bit 4-core 1.4 GHz

Performance

Over 112 MB/s encrypted reading and writing1

Storage

Maximum 64 TB raw capacity

Energy-saving

7.88 W in hibernation mode

Manage your photo collections

Organize your photos intelligently with Moments, a modern, AI-enabled photo management application that lets you effortlessly preserve your precious memories. Learn more


Stream content to your TV

Turn your Synology NAS into a home media hub and stream your digital contents to your favorite devices such as computers, mobile devices, Samsung TV, Apple TV, Google Chromecast, and DLNA devices.

Seamless integration with your mobile devices

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


Seamless integration with your mobile devices

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


Access and sync your files seamlessly

Synology Drive provides a built-in universal portal to access your data anytime and anywhere, and synchronize all your files across platforms, including Windows, macOS, Linux, Android, and iOS. Learn more


Sync files on demand: Save the storage space and network bandwidth of your PC.


Go back in time: Easily retrieve previous versions of your shared files.


Back up your data: Protect your files as scheduled or in real-time.


Reliable and efficient backup options

Synology Hyper Backup is a reliable and multi-directional backup solution offering data deduplication and compression. You can back up from various source folders, including external USB drives, another Synology NAS, rsync servers, or from public cloud services like Google Drive or Synology C2, and protect your data against malicious attacks and encryption-based ransomware threats. Learn more

Powered by Synology DSM

Multimedia

Complete multimedia solution for management, streaming, and playback.

Learn more

Desktop Backup

Simplified backup solution for your Mac, PC, and mobile devices.

Learn more

File Server/Management

Powerful built-in file management and sharing services.

Learn more

Synology Drive

A versatile solution for file management and synchronization. 

Learn more

Hyper Backup

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

Learn more

Surveillance Station

Complete surveillance solution for recording, monitoring, and management.

Learn more
  • 1Status indicator
  • 2LAN indicator
  • 3Power button and indicator
  • 4Drive status indicator
  • 51GbE RJ-45 port
  • 6Power port
  • 7Kensington Security Slot
  • 8System fan
  • 9USB 3.0 port
  • 10Reset button

CPU

 CPU Model Realtek RTD1296
CPU Quantity 1
CPU Architecture 64-bit
CPU Frequency 4-core 1.4 GHz
Hardware Encryption Engine

Memory

 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.

Storage

 Drive Bays 4
Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Maximum Single Volume Size* 108 TB
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 3.0 Port 2

File System

 Internal Drives
  • EXT4
External Drives
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
Notes exFAT Access is purchased separately in Package Center.

Appearance

 Size (Height x Width x Depth) 184 mm x 168 mm x 230 mm
Weight 2.21 kg

Others

 System Fan 80 mm x 80 mm x 2 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Low-power Mode
Brightness Adjustable Front LED Indicators
Power Recovery
Noise Level* 20.6 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 90 W
AC Input Power Voltage 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 21.71 W (Access)
7.88 W (HDD Hibernation)
British Thermal Unit 74.08 BTU/hr (Access)
26.89 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

 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
  • EAC
  • CCC
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM

Warranty

 2 Years
Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)

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

Optional Accessories