Personal cloud solution for data sharing and backup
An easy-to-use private cloud for everyone
DS220j is an entry-level 2-bay NAS designed for home and personal users to store and share photos, videos, and documents. The private cloud solution is powered by the award-winning DiskStation Manager (DSM) OS, providing an intuitive user interface and safe data protection approaches for easy digital asset backups from computers and mobile devices at no additional cost.
CPU - 64-bit 4-core 1.4 GHz
Performance - More than 112 MB/s reading and writing1
Safe storage - RAID 1 protection to avoid sudden drive failure
Cost savings - No public-cloud subscription fees
Centralized backup solution for your digital devices
Synology's comprehensive multi-version backup solutions protect your digital assets on computers (Windows/Mac) and mobile phones (Android/iOS) against malicious attacks, including the rising threat from encryption-based ransomware.
Stream content to your TV
Turn your Synology NAS into a home media hub and stream your digital content to your favorite electronic devices, including computers, mobile devices, Samsung TV, Apple TV, Google Chromecast, and DLNA devices.
Synology Hybrid RAID (SHR) technology
Storage management is easy with Synology Hybrid RAID (SHR) technology. SHR is an automated RAID management system that allows you to easily create and expand storage volumes and migrate RAID types without requiring details on the RAID setup. SHR provides 1-disk redundancy to safeguard your data in case of drive failures.
SHR maximizes the data capacity of your RAID when different size HDDs are used. Calculate your RAID needs.
For new users with limited technical knowledge who want to protect their data using RAID technology, a convenient installation wizard will guide you through all the steps during your first installation.
Add new disks on the fly in Storage Manager with a simple click.
While creating a volume, choose to plan ahead and leave empty or unallocated space for future use.
Seamless integration with your mobile devices
Synology mobile applications are designed to give you quick and secure access to your data wherever you are.
Powerful built-in file management and sharing services.
Complete multimedia solution for management, streaming, and playback.
Store multiple backup versions with block-level incremental data backup and cross-version deduplication.
Award-winning operating system with an intuitive user interface and powerful capabilities.
Comprehensive built-in security tools are constantly updated to protect your devices against evolving threats.
Save additional investment by integrating various network services, web/mail services, management applications into your NAS.
Quad Core 1.4 GHz
Hardware Encryption Engine
512 MB DDR4
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)
3.5" SATA HDD
2.5" SATA HDD (with optional 2.5" Disk Holder)
2.5" SATA SSD (with optional 2.5" Disk Holder)
Maximum Internal Raw Capacity
32 TB (16 TB drive x 2) (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.
RJ-45 1GbE LAN Port
USB 3.0 Port
exFAT Access is purchased separately in Package Center.
Size (Height x Width x Depth)
165 mm x 100 mm x 225.5 mm
92 mm x 92 mm x 1 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
12.46 W (Access)
5.06 W (HDD Hibernation)
British Thermal Unit
45.52 BTU/hr (Access)
17.27 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
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 1
Quick Installation Guide X 1
Surveillance Device License Pack
Disk Holder: Type C
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-220J|
| Brand || Synology|
| Series || DiskStation NAS|
| Model || DS220j|
| Type || 2-Bay (512MB RAM)|
| ROHS || Y|
| Date added || 08/05/2019|
DS220j Spec Information
| Form Factor / Drive Height || 165x100x225.5mm|
| Platter size || 3.5"|
| Platter (alternate) || 2.5"|
| RAM/Cache || 512MB DDR4|
| Guarantee || 2yr|
| Processor || Realtek RTD1296 4-core 1.4 GHz|
| CPU Mark (cpubenchmark.net) || low|
| Total Drives || 2|
| Total Drives (alternate) || 2|
| RAID || 0:1:|
| RAID Levels || Basic, JBOD, RAID 0, RAID 1|
DS220j Spec Connections
|USB3||USB3 type A (host)||External||2|
| Speed/RPM || SATA to Gigabit Ethernet (1,000 Mbit/s)|
| Weight (kg) || 1.5kg|
| Weight (bare) || 880g|
| External Length (mm) || 300cm|
| External Width (mm) || 250cm|
| External Height (mm) || 200cm|
| Colour || White|
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Synology DiskStation NAS DS220j reviews
Can I start with a single drive, and add a second one later?
20/12/2020 | Guest
Yes, you can migrate from a single drive to a protected RAID-1 mirror, or a risky RAID-0. In either case, we recommend that you use exactly the same make and model of drive.
Would you like to tell us about a lower price for DS220j?Link to a DS220j review page This is a masive improvement comparedto old DS218j. Faster RAM and much fuster processor. Can not wait till I get one.
31/01/2020 | Hans
SPAN.COM tech team