Synology DiskStation DS223j 2-Bay NAS Enclosure

BH #SYDS223J • MFR #DS223J
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Synology DiskStation DS223j 2-Bay NAS Enclosure
Key Features
  • 2 x 3.5/2.5" SATA HDD/SSD Drive Bays
  • 1.7 GHz Realtek RTD1619B Quad-Core
  • 1GB of DDR4 RAM
  • 1 x Gigabit Ethernet Port
Designed as an efficient one-stop solution for all your data storage needs, the DiskStation DS223j 2-Bay NAS Enclosure from Synology lets you create a private cloud to protect your files, share your data across several devices, store security footage with intelligent video surveillance tools, and more. It is equipped with two drive bays that are capable of natively supporting 3.5" SATA hard drives, as well as 2.5" SATA hard drives and SSDs.
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Synology DS223j External HDD/SSD Overview

Designed as an efficient one-stop solution for all your data storage needs, the DiskStation DS223j 2-Bay NAS Enclosure from Synology lets you create a private cloud to protect your files, share your data across several devices, store security footage with intelligent video surveillance tools, and more. It is equipped with two drive bays that are capable of natively supporting 3.5" SATA hard drives, as well as 2.5" SATA hard drives and SSDs.

The DiskStation DS223j runs on Synology DiskStation Manager (DSM) OS, which is a browser-based operating system that helps to simplify managing your Synology NAS. Its CPU is a 1.7 GHz Realtek RTD1619B Quad-Core and its 1GB of DDR4 RAM allows frequently-used files and applications to be quickly accessed. Also featured are two USB-A 3.2 Gen 1 ports that allow it to be connected to external drives or other peripherals, and network connectivity is achieved via the integrated Gigabit Ethernet port, allowing your stored data to be shared with users throughout the network. The DS223j is also able to function as a multimedia solution for management, streaming, and playback.

For those who require RAID support, the DS223j supports RAID 0 and 1, as well Synology Hybrid RAID and Basic RAID, each of which offers performance, data redundancy, or a combination of both. For those who do not require a RAID, JBOD is also available, allowing each drive bay to be individually utilized. A 92 x 92mm fan helps keep the system running cool at all times and the server supports numerous scheduled power on / off cycles and hard drive hibernation to further minimize power consumption and operation expenses.

The Synology DiskStation DS223j 2-Bay NAS Enclosure operates on 100-240 VAC at 50/60 Hz and includes an accessory pack, an AC power adapter, an AC power cord, and an RJ45 LAN cable. It is protected by a limited 2-year warranty.

Access Your Files Anytime, Anywhere
Organize data scattered across devices. Your Synology NAS can serve as a go-to platform to securely and conveniently store any type of data with comprehensive and intuitive access and management tools.
  • Enable QuickConnect to access your NAS securely from anywhere without configuring complex port forwarding rules
  • Browse and manage your files and media from any browser with Synology Drive, or access data through your default file browser using common network protocols
  • Keep your photos and videos organized using Synology Photos' smart sorting functions
  • Deploy your Synology NAS as edge storage and fit it easily into existing infrastructure, thanks to Windows AD and LDAP integration
Collaboration and Synchronization Platform
Easily share documents with colleagues and boost productivity while working in a team or with your clients.
  • Build a private data cloud for easy file management and sharing across all platforms, and keep data in sync between two Synology systems with Synology Drive
  • Synchronize data to and from popular cloud storage platforms with Synology Cloud Sync
  • Share media with colleagues or collaborators through the privacy-focused sharing options in Synology Photos
Flexible Data Protection Options
Synology DSM comes with a host of backup and data protection solutions available at no extra cost.
  • Leverage Synology Drive to protect data from ransomware attacks or accidental deletion with real-time or scheduled backup of your PC folders
  • Safeguard photos and videos taken on mobile devices by automatically creating remote copies with Synology Drive or Synology Photos
  • Efficiently back up your entire Synology NAS or select folders to multiple destinations using Hyper Backup
  • Store backups off-site on C2 Storage, a dedicated and secure cloud destination powered by Synology C2
  • Create point-in-time snapshots with Snapshot Replication, allowing users to reverse any unplanned or unwanted changes
Versatile and Private Video Surveillance
Synology Surveillance Station transforms your Synology system into a powerful network video recorder (NVR).
  • 8300+ supported camera models
  • ONVIF support for a broader selection of cameras
  • Private, subscription-free storage of recordings
  • Access through web browsers, desktop clients, or mobile apps
  • Event-based rules to trigger specific actions
  • Email, SMS, and push notification options
  • Dual recording to the cloud with C2 Surveillance for online access and convenient sharing
UPC: 846504004768

Synology DS223j External HDD/SSD Specs

Key Specs
RAID
Yes: Supported RAID Modes: 0 / 1 / Basic / Hybrid
Number of Bays
2x 2.5"/3.5" SATA (Unspecified Version)
Inputs/Outputs
1x RJ45 Gigabit Ethernet
2x USB-A 3.0 / 3.1/3.2 Gen 1
Computing
CPU
Quad-Core: Up to 1.7 GHz
Processor
Realtek RTD1619B
GPU
Mali G57
Memory
1 GB DDR4
RAM Configuration / Capacity
Onboard Only/Not Upgradeable
Drives
RAID
Yes: Supported RAID Modes: 0 / 1 / Basic / Hybrid
General
Number of Bays
2x 2.5"/3.5" SATA (Unspecified Version)
Inputs/Outputs
1x RJ45 Gigabit Ethernet
2x USB-A 3.0 / 3.1/3.2 Gen 1
Media Card Slots
No
PCI Expansion
No
Networking
Link Aggregation and Failover Support
No
iSCSI Support
No
Software
Installed Operating System
No
Mobile App Compatible
Yes: Android & iOS
Security
Encryption
No
Security Features
No
Electrical
Input Power
100 to 240 VAC, 50 / 60 Hz
Physical
Operating Conditions
32 to 104°F / 0 to 40°C at 8 to 80% Humidity
Storage Conditions
-4 to 140°F / -20 to 60°C at 5 to 95% Humidity
Certifications
RoHS
Cooling
1x 92 mm Fan
Dimensions
8.9 x 6.5 x 3.9" / 225.5 x 165 x 100 mm
Weight
2 lb / 0.9 kg
Packaging Info
Package Weight
3.95 lb
Box Dimensions (LxWxH)
11.4 x 11.3 x 4.8"

Synology DS223j External HDD/SSD Reviews

Great NAS

By Adam
Rated 5 out of 5
Date: 2026-07-29

This NAS was very easy to setup. Very happy with my purchase. This is my second Synology that I’ve bought from B&H and everything has been smooth both times!

Excellent 2 bay NAS

By Richard
Rated 5 out of 5
Date: 2026-07-10

I was unsure of if this device would work for my needs. I have it hosting around 20,000 photos/short videos using synology photos on my phones, desktops and Apple TV. You will see many people say that you need to buy a 2 bay model for more than twice the price for that. This device works perfectly fine for me to do what I need. I have two 7200 RPM 3TB SATA drives running RAID-1 formatted to BTRFS. Every device with the synology photos app lets me browse the 20,000 photos in a timeline view with very little delay for it to load the thumbnails. For a medium sized photo library this device is perfect.

See any errors on this page?

can I install the WD 6TB Red Plus drive? is it ...

can I install the WD 6TB Red Plus drive? is it compatible? (BH #WE60EFPXSPC5)
Asked by: Gustavo
Yes, the WD 6TB Red Plus 5400 rpm SATA III 3.5" Internal NAS HDD, BH # WE60EFPXSPC5, is compatible with the Synology DiskStation DS223j 2-Bay NAS Enclosure.
Answered by: JP A
Date published: 2026-04-17

Does this come with hard drives?

Does this come with hard drives?
Asked by: Steven
No, the Synology DiskStation DS223j 2-Bay NAS Enclosure does not include hard drives.
Answered by: Kenneth C
Date published: 2025-10-09

Whats the largest hard drive can you put in this ...

Whats the largest hard drive can you put in this unit ?
Asked by: John
The largest drive capacity on the Synology DiskStation DS223j 2-Bay NAS Enclosure's compatibility list is 16TB, though larger drives like 18Tb and 20TB may also work.
Answered by: Paige K
Date published: 2025-12-02

Does this nas support lossless compression for ...

Does this nas support lossless compression for video/photo?
Asked by: Cat
Yes, you can store lossless compressed files on the Synology DiskStation DS223j 2-Bay NAS Enclosure.
Answered by: Calvin M
Date published: 2024-01-16

What is the maximum RAM that can be installed?

What is the maximum RAM that can be installed?
Asked by: Andrey
The Synology DiskStation DS223j 2-Bay NAS Enclosure's RAM can not be upgraded.
Answered by: Paige K
Date published: 2025-10-09

is this expandable?

is this expandable?
Asked by: Marianne
The Synology DiskStation DS223j 2-Bay NAS Enclosure (B&H # SYDS223J) does not support any of Synology's expansion enclosures; at best, you could connect an external hard drive to one of the USB ports.
Answered by: Miguel M
Date published: 2026-06-23

If I install two 4TB drives in this. What would ...

If I install two 4TB drives in this. What would be my total storage usage be, 8TB or 4TB?
Asked by: Michael
The total storage in the Synology DiskStation DS223j 2-Bay NAS Enclosure would be dependent on the RAID configuration. If formatted in RAID 1 for example, the total storage of two 4TB drives in the enclosure would be 4TB.
Answered by: Thomas M
Date published: 2025-10-20

Would the working QNAP NAS hard drives be ...

Would the working QNAP NAS hard drives be interchangeable with this Synology NAS directly?
Asked by: CHEUNG
You cannot migrate in-use drives from a QNAP NAS to the Synology DiskStation DS223j 2-Bay NAS Enclosure. You would need to populate the DS223j with blank drives, and migrate your data manually.
Answered by: Calvin M
Date published: 2025-10-09
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