DS420+ is a powerful 4-bay desktop NAS that brings you a fast and smooth data management experience, as well as over 226 MB/s sequential read and 225 MB/s sequential write throughput. It benefits computing-intensive applications, speeding up Synology Drive and Moments, and boosting Web PHP response efficiency, for simple and efficient data management. DS420+ is equipped with two built-in M.2 SSD slots that support Synology SSD Cache technology, allowing you to reduce random I/O response time significantly without occupying front drive bays.
Establish a strong storage foundation with Btrfs
DS420+ features a Btrfs file system optimized by Synology to offer you high reliability and high performance. Btrfs supports advanced storage technologies that meet the needs of modern business. Advanced snapshot technology provides schedulable and near-instantaneous data protection of shared folders and LUNs. File and folder level data restoration offers users who wish to restore only a specific file or folder more flexibility. Flexible Shared Folders and User Quota System provide comprehensive quota control on all user accounts and shared folders. File self-healing allows Btrfs file systems to auto-detect corrupted files using mirrored metadata and to recover broken data using RAID configurations. Inline compression compresses data before writing them to the drive, to optimize storage use and reduce write commands to the drives.
Powerful backup tools
DS420+ offers users a range of backup solutions for cloud and physical, on-premises environments. Backing up and restoring data is effortless - and completely free of licenses on compatible NAS models. Back up your cloud data: Cloud Sync enables users to seamlessly back up or synchronize data between a local Synology NAS and other cloud services. Back up your PCs and servers: Synology Drive Client backs up your Windows, Mac, and Linux desktop devices to safeguard important computer files. Back up your Synology NAS: Hyper Backup offers a wide range of destinations for backups of your NAS, including on-premises and cloud.
Your personal multimedia library
DS420+ helps you easily manage multimedia content and share it across Windows, macOS, and Linux platforms. Video Station helps you organize your personal digital video library using different data and criteria. Streaming videos to Apple TV, Android TV, Samsung TV, Chromecast and mobile apps is a breeze, and a wide range of digital devices are supported. Audio Station provides music playback via AirPlay devices, and provides lossless audio format support and Internet radio. Using the Alexa Audio Station feature, you can call out your music to your Voice Assistant. Moments' and Photo Station's intuitive design fit both home users and professional photographers. Auto-created albums help you manage your images in seconds. You can also share photographs with local users or the public while regulating security using fine permission settings.
Multimedia anytime, everywhere
Synology's mobile apps let you enjoy your multimedia library anytime, anywhere. Available on iOS and Android platforms, DS photo, DS audio, DS video, and DS file let you access your Synology NAS through Photo Station, Audio Station, Video Station, and File Station, respectively. With Synology QuickConnect, you can connect to your Synology NAS using a secure and customizable address for instant access to media and work files on Windows, Mac, Linux, and mobile devices.
Cool and quiet design for energy efficiency
Synology DS420+ is designed with energy efficiency in mind. Compared with its average PC counterpart, Synology DS420+ consumes less power. The power scheduling feature further reduces power consumption and operating cost.
Synology Disk Station DS420+ - NAS server
Max Supported Capacity
Installed Devices / Modules Qty
0 (installed) / 4 (max)
19.9 cm x 22.3 cm x 16.6 cm
2.18 kg ()
1 x Intel Celeron J4025 2 GHz (Dual-Core)
RAID RAID 0, 1, 5, 6, 10, JBOD
10Mb LAN, 100Mb LAN, GigE
AC 120/230 V (50/60 Hz)
Apple MacOS, Linux, Microsoft Windows, Android, Apple iOS
Microsoft CIFS, Network File System (NFS), FTP, Apple File Protocol (AFP), HTTPS, Web-based Distributed Authoring and Versioning (WebDAV), Calendaring Extensions to WebDAV (CalDAV)
Wake on LAN (WOL), High Availability, download client, Access Control List (ACL) support, RADIUS support, iTunes server, e-mail server, reset button, surveillance station, DNS server, DLNA Media Server, WebDAV server, VPN Server, Dropbox support, Link Aggregation, failover protection, AES encryption, Yandex Disk support, Microsoft OneDrive support, DLNA support, hubiC support, SSD trim, Amazon S3 support, Backblaze B2 support, MegaDisk support
Expansion / Connectivity
4 (total) / 4 (free) x hot-swap - 2.5" / 3.5"
2 (total) / 2 (free) x M.2 2280
2 x USB 3.0 - Type A , 2 x Ethernet 1000Base-T - RJ-45