Streamline your data management
High performance NAS with SSD cache acceleration capability
Synology DS420+ is designed for IT enthusiasts and home users. Equipped with a 2-core processor and built-in M.2 NVMe 2280 SSD slots for cache acceleration, DS420+ is ideal for data sharing, video streaming, and photo indexing.
CPU : 2-core 2.0 GHz, burst up to 2.9 GHz
Cache Acceleration : 2 x built-in M.2 2280 NVMe SSD slots
Performance : Average 15% boost to computing-intensive applications1
Network : 2 x 1GbE LAN ports
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 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 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.
Engineered for reliability, backed by Synology
DS420+ is designed to reliably store your data and is backed by Synology's three-year hardware warranty. An optional two-year extended warranty is available in select regions for up to five years of coverage.
Powered by Synology DSM
Simplified backup solution for your Mac, PC, and mobile devices.
Award-winning operating system with an intuitive user interface and powerful capabilities.
Schedulable and instantaneous data protection for shared folders and iSCSI LUNs for disaster prevention.
A versatile solution for file management and synchronization.
Powerful built-in file management and sharing services.
Comprehensive built-in security tools are constantly updated to protect your devices against evolving threats.
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.
Find out if the Synology DS420+ NAS Drive specifications suit your needs below:
Intel Celeron J4025
2-core 2.0 (base) / 2.9 (burst) GHz
Hardware Encryption Engine (AES-NI)
2 GB DDR4 non-ECC
Total Memory Slots
Memory Expandable up to
6 GB (2 GB + 4 GB)
Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
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.
M.2 Drive Slots
Compatible Drive Type*
3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
M.2 2280 NVMe SSD
Maximum Internal Raw Capacity
64 TB (16 TB drive x 4) (Capacity may vary by RAID types)
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.
The maximum single volume size is not directly related to the maximum raw capacity.
Each internal volume (may consist of multiple drives) is expandable up to 108TB.
RJ-45 1GbE LAN Port
2 (with Link Aggregation / Failover support)
USB 3.0 Port
exFAT Access is purchased separately in Package Center.
Size (Height x Width x Depth)
166 mm x 199 mm x 223 mm
92 mm x 92 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
28.30 W (Access)
8.45 W (HDD Hibernation)
British Thermal Unit
96.63 BTU/hr (Access)
72.11 BTU/hr (HDD Hibernation)
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%
0°C to 40°C (32°F to 104°F)
-20°C to 60°C (-5°F to 140°F)
5% to 95% RH
3-year hardware warranty, extendable to 5-year coverage - EW201
The warranty period starts from the purchase date as stated on your purchase receipt
Main Unit X 1
Accessory Pack X 1
AC Power Adapter X 1
AC Power Cord X 1
RJ-45 LAN Cable X 2
Quick Installation Guide X 1
D4NESO-2666-4G DDR4 non-ECC SO-DIMM*
2.5" SATA SSD: SAT5200
M.2 2280 NVMe SSD: SNV3400
Surveillance Device License Pack
All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
Model specifications are subject to change without prior notice.
The figures are based on Synology internal testing. No other services or applications are processed during the performance tests.
| Stock code || IBSY-420P|
| Brand || Synology|
| Series || DiskStation NAS|
| Model || DS420+|
| Type || 4-Bay, 2x NVMe (2GB RAM)|
| ROHS || Y|
| Date added || 27/04/2020|
DS420+ Spec Information
| Form Factor / Drive Height || 166x199x223 mm|
| Platter size || 3.5"|
| Platter (alternate) || 2.5"|
| RAM/Cache || 2GB|
| Guarantee || 3yr|
| Processor || Intel Celeron J4025 2-core 2.0 GHz, burst up to 2.9 GHz|
| CPU Mark (cpubenchmark.net) || 1825|
| Total Drives || 4|
| Total Drives (alternate) || 4|
| RAID || 0:1:5:6:|
DS420+ Spec Connections
| Speed/RPM || SATA 6Gb/s to 1GbE|
| Weight (kg) || 3.2kg|
| Weight (bare) || 2.18kg|
| Colour || Black|
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Synology DiskStation NAS DS420+ reviews
What is the maximum storage DS420+ NAS can handle?
27/09/2020 | Guest
It is better to ask SPAN for free compatibility checks. But as today you could fill it with 4X 18TB Seagate Ironwolf. This would give you a total raw storage of 72TB
Can I use any drives with this NAS?
26/09/2020 | Guest
Yes, but we would recommend to use WD Red or Seagate Ironwolf. They consume less energy and generate less vibration and noise.
Can I add a 2TB HDD and a 2nd one later with RAID1?
25/09/2020 | Guest
Yes, you can migrate from Basic single disk to RAID 1
Can I upgrade the RAM on this NAS?
24/09/2020 | Guest
Looking at the specs, this NAS should allow RAM upgrade. Ask SPAN.COM for free compatibility checks.
Can this be used as a Plex server on its own?
23/09/2020 | Guest
Yes, this NAS should have an App available to install and run Plex independently.
Would you like to tell us about a lower price for DS420+?Link to a DS420+ review page Is this enclosure suitable for a SSD - such as Samsung EVO SATA III SSD
22/09/2020 | Guest
Yes, it will work with Samsung, WD or Seagate SSD. In fact this will improve the internal speed and make apps run faster.
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