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Synology DiskStation DS420+

High performance NAS with SSD cache acceleration capability

A four-bay network attached storage solution designed for IT enthusiasts and home users. It delivers smooth performance for file sharing, video streaming and photo indexing. Dual M.2 SSD slots and Synology SSD Cache technology offers you an effective and cost-efficient way to boost system I/O and application performance.

Specs-wise, the DS420+ features Intel Celeron J4025 dual-core processor, 2 GB DDR4 non-ECC RAM (upgradable to a total of 2 GB + 4 GB), and two GbE Ethernet ports that support Link Aggregation/Failover. Two 92mm rear fans keep your drives running cool and always at peak performance, without giving too much whirring noise.


2-core 2.0 GHz, burst up to 2.9 GHz

Cache Acceleration

2 x built-in M.2 2280 NVMe SSD slots


Average 15% boost to computing-intensive applications*


2 x 1GbE LAN ports

* Performance figures are based on the average percentage improvement of DS420+ relative to its predecessor, as tested at Synology labs. Test items include file indexing in Synology Drive and photo indexing in Moments.

Boost performance with built-in SSD slots

DS420+ provides two built-in M.2 SSD slots so that you can take full advantage of Synology SSD Cache functionality. Add SSD cache for up to 20 times faster I/O response without using front drive bays.

Accelerate demanding applications

A more powerful CPU speeds up computing-intensive applications. The new 2-core processor boosts photo indexing, database response times, and web PHP response efficiency. Easily categorize your photo memories, smoothly manage files across computers and mobile devices, and enjoy blazing fast web applications.

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.

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.

Your personal entertainment and multimedia hub

Access multimedia content anytime, anywhere through an intuitive web-based interface.

Audio Station

Audio Station is your personal music center, designed to intelligently sort and organize your audio files, and stream to Google Cast enabled devices. Audio Station supports lossless formats to ensure pristine audio quality.


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

Video Station

Video Station lets you easily manage and organize movies, TV shows, and home videos, and stream content to computers, smartphones, and media players.

Seamless integration with your mobile devices

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

DS audio


DS video

Powered by Synology DSM

Desktop Backup

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


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

Snapshot Replication

Schedulable and instantaneous data protection for shared folders and iSCSI LUNs for disaster prevention.

Synology Drive

A versatile solution for file management and synchronization.

File Server/Management

Powerful built-in file management and sharing services.


Comprehensive built-in security tools are constantly updated to protect your devices against evolving threats.

1 Status indicator

2 Drive status indicator

3 Drive tray lock

4 USB 3.0 port

5 Power button and indicator

6 Drive tray

7 1GbE RJ-45 port

8 Reset button

9 Power port

10 System fan

11 Kensington Security Slot