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
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.
64-bit 4-core 1.4 GHz
Over 112 MB/s encrypted reading and writing1
Maximum 64 TB raw capacity
7.88 W in hibernation mode
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.
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
Complete multimedia solution for management, streaming, and playback.Learn more
Simplified backup solution for your Mac, PC, and mobile devices.Learn more
Powerful built-in file management and sharing services.Learn more
A versatile solution for file management and synchronization.Learn more
Store multiple backup versions with block-level incremental data backup and cross-version deduplication.Learn more
Complete surveillance solution for recording, monitoring, and management.Learn more
|4-core 1.4 GHz
|Hardware Encryption Engine
|1 GB DDR4 non-ECC
|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.
|Compatible Drive Type* (See all supported drives)
|Maximum Single Volume Size*
|Hot Swappable Drive
|"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.
|RJ-45 1GbE LAN Port
|USB 3.0 Port
|exFAT Access is purchased separately in Package Center.
|Size (Height x Width x Depth)
|184 mm x 168 mm x 230 mm
|80 mm x 80 mm x 2 pcs
|Fan Speed Mode
|Brightness Adjustable Front LED Indicators
|Scheduled Power On / Off
|Wake on LAN / WAN
|Power Supply Unit / Adapter
|AC Input Power Voltage
|100 V to 240 V AC
|50/60 Hz, Single Phase
|21.71 W (Access)
7.88 W (HDD Hibernation)
|British Thermal Unit
|74.08 BTU/hr (Access)
26.89 BTU/hr (HDD Hibernation)
|0°C to 40°C (32°F to 104°F)
|-20°C to 60°C (-5°F to 140°F)
|5% to 95% RH
|The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)