DiskStation DS223j

Compact, quiet, and energy-efficient storage

All-in-one platform to organize your data

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Secure private cloudAnywhere, anytime secure access to all your data.

Easy sharing and syncingSafely access and share files and media from anywhere.

Comprehensive data protectionHardware and software engineered to protect your data — trusted by millions.

Your data in safe hands with Btrfs

The advanced Btrfs file system helps safeguard data against corruption through file self-healing and allows for the reversal of unintentional or malicious changes through fast snapshot technology. Learn more

Store, share, and protect

Configure your DS223j to manage all your documents, photos, and other files, or protect your physical assets with professional video surveillance.

Photo management

Manage your photo collection

Organize your photos and videos with smart and intuitive features. Browse automatically generated albums using facial recognition, geolocation, tags, and more.

Sharing made safer and easier

Securely share media with colleagues or clients while leveraging privacy-focused options for your peace of mind. Collaborate with selected users on a folder-based media library by creating a Shared Space.

Data protection

Automated media backup

Automatically upload photos and videos taken on your mobile device to your private cloud with Synology Photos or Synology Drive.

Protection against cyberattacks

Leverage Synology Drive to protect data from ransomware attacks or accidental deletion with real-time or scheduled backup of your PC folders.

Video surveillance

Wide compatibility

Choose from over 8,300 IP cameras or ONVIF devices compatible with Synology Surveillance Station to keep your premises secure.

Universal access

Watch live camera streams through web browsers, desktop clients, or mobile apps. Get notified of events and take immediate action.

Add an extra layer of protection

Perform full Synology system backups

Back up your entire Synology device, including system settings and applications, or select specific folders. Transfer all backup data to multiple destinations using Hyper Backup.

Keep your data safe with snapshots

Take your data protection to the next level by creating automatic point-in-time snapshots of shared folders that can be copied off-site and rapidly restored using Snapshot Replication.

Hardware Overview

1Status Indicator
2LAN Indicator
3Drive Status Indicators

4Power Button and Indicator
5Fan
61GbE RJ-45 Port

7USB 3.2 Gen 1 Ports
8Reset Button
9Power Port

10Kensington Security Slot

More ways to harness your NAS

File management

Store, access, and share files securely and efficiently with the native solutions available in Synology DSM.

Learn more

Productivity Solutions

Bring teams together, communicate, and collaborate in real time on a protected and private platform.

Learn more

Ransomware prevention and protection

Minimize the threat posed by increasingly sophisticated malware with Synology.

Learn more

Notes:Feature available from DSM 7.2.Surveillance Station includes 2 free licenses. Connecting more cameras and devices requires additional licenses.C2 Storage for Hyper Backup requires purchase of an eligible annual or monthly subscription. A free trial is available for each newly registered Synology Account. Learn more

Hardware Specifications
CPU
CPU	CPU Model	Realtek RTD1619B
	CPU Quantity	1
	CPU Core	4
	CPU Architecture	64-bit
	CPU Frequency	1.7 GHz
	Hardware Encryption Engine
Memory
Memory	System Memory	1 GB DDR4 non-ECC
	Notes	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.
Storage
Storage	Drive Bays	2
	Drive Type (See all supported drives)	3.5" SATA HDD 2.5" SATA SSD (with optional 2.5" Disk Holder)
	Hot Swappable Drive*	-
External Ports
External Ports	RJ-45 1GbE LAN Port	1
	USB 3.2 Gen 1 Port*	2
	Notes	This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes. The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.
Appearance
Appearance	Size (Height x Width x Depth)	165 mm x 100 mm x 225.5 mm
	Weight	0.88 kg
Others
Others	System Fan	92 mm x 92 mm x 1 pcs
	Fan Speed Mode	Full-Speed Mode Cool Mode Quiet Mode Low-power Mode
	Brightness Adjustable Front LED Indicators
	Power Recovery
	Noise Level*	18.2 dB(A)
	Scheduled Power On / Off
	Wake on LAN / WAN
	Power Supply Unit / Adapter	60 watts
	AC Input Power Voltage	100V to 240V AC
	Power Frequency	50/60 Hz, Single Phase
	Power Consumption	16.31 watts (Access) 4 watts (HDD Hibernation)
	British Thermal Unit	55.62 BTU/hr (Access) 13.64 BTU/hr (HDD Hibernation)
	Notes	For more information on how power consumption is measured, refer to this article. 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%
Temperature
Temperature	Operating Temperature	0°C to 40°C (32°F to 104°F)
	Storage Temperature	-20°C to 60°C (-5°F to 140°F)
	Relative Humidity	5% to 95% RH
Certification
Certification	FCC CE BSMI VCCI RCM UKCA EAC CCC KC BIS
Warranty
Warranty	2-year hardware warranty
	Notes	The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) In the event that a valid receipt of purchase of Product or Product invoice is not presented, or is apparently erroneous or falsified, the Warranty Period for the presented Product shall commence from the manufacturing date in accordance with Synology's internal records.
Environment
Environment	RoHS Compliant
Packaging Content
Packaging Content	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
Optional Accessories
Optional Accessories	Plus Series 3.5" SATA HDD: HAT3300 Series Disk Holder: Type C

DSM Specifications
Storage Management
Storage Management	Maximum Single Volume Size	108 TB
	Maximum Internal Volume Number	64
	Supported RAID Type	Synology Hybrid RAID Basic JBOD RAID 0 RAID 1
	RAID Migration	Basic to RAID 1
	Volume Expansion with Larger HDDs	Synology Hybrid RAID RAID 1
	Volume Expansion by Adding a HDD	Synology Hybrid RAID
	Notes	Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored. Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration.
File System
File System	Internal Drives	Btrfs ext4
	External Drives	Btrfs ext4 ext3 FAT NTFS HFS+ exFAT
	Notes	Btrfs file system is available from DSM 7.2-64570.
File Services
File Services	File Protocol	SMB AFP NFS FTP WebDAV Rsync
	Maximum Concurrent SMB/AFP/FTP Connections	100
	Windows Access Control List (ACL) Integration
	NFS Kerberos Authentication
	Notes	The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed.
Account & Shared Folder
Account & Shared Folder	Maximum Local User Accounts	1,024
	Maximum Local Groups	256
	Maximum Shared Folder	256
	Maximum Shared Folder Sync Tasks	4
Hyper Backup
Hyper Backup	Data & Folder Backup
Log Center
Log Center
Log Center	Syslog Events per Second	200
General Specifications
General Specifications	Supported Protocols	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
	Supported Browsers	Chrome Firefox Edge Safari
	Supported Language	English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文
	Notes	For an updated list of supported browser versions, check the DSM Technical Specifications.
Add-on Packages view the complete package list
Synology Chat
Synology Chat
Download Station
Download Station
Download Station	Maximum Concurrent Download Tasks	80
SAN Manager
SAN Manager
SAN Manager	Maximum iSCSI Target Number	10
	Maximum LUN	10
	LUN Clone/Snapshot, Windows ODX
Media Server
Media Server
Media Server	DLNA Compliance
Synology Photos
Synology Photos
Synology Photos	Facial Recognition
Snapshot Replication
Snapshot Replication
Snapshot Replication	Maximum Snapshots per Shared Folder	256
	Maximum of System Snapshots	4,096
	Notes	Snapshot Replication is available from DSM 7.2-64570.
Surveillance Station
Surveillance Station
Surveillance Station	Default Licenses	2 (Additional cameras require purchase of licenses)
	Suggested Maximum IP Cameras and Total FPS (H.264)	1080p: 12 channels, 360 FPS 3M: 12 channels, 300 FPS 5M: 12 channels, 150 FPS 4K: 11 channels, 110 FPS
	Suggested Maximum IP Cameras and Total FPS (H.265)	1080p: 12 channels, 360 FPS 3M: 12 channels, 360 FPS 5M: 12 channels, 350 FPS 4K: 12 channels, 200 FPS
	Notes	Performance figures are obtained from testing conducted with the device fully populated with drives, with their default memory configuration, and under a continuous recording setup. Actual system capabilities may vary based on configuration, drive performance, enabled features, and the presence of additional workloads. Use NVR Selector to quickly find a suitable model based on your requirements. The number of streams that can be viewed simultaneously is twice the suggested maximum number of cameras. For example, if the suggested maximum number of cameras for a model is 10 under H.264, 1080p, the model can support up to 20 streams of the same specification at the same time.
Synology Drive
Synology Drive
Synology Drive	Recommended Number of Concurrent Sync Clients	200 (the number of connections that can be maintained when the recommended number of hosted files was reached)
	Recommended Number of Hosted Files	500,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
	Notes	Exceeding the recommended numbers above will not block application operations, but may result in longer response time. Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
Synology Office
Synology Office	Suggested Users	500
	Notes	Suggested users is derived from testing in an environment with 60% idle users (each logging in and viewing documents) and 40% active users (each executing random actions at intervals of 20 to 40 seconds) operating within documents, each document having 30 users. Learn more Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
VPN Server
VPN Server
VPN Server	Maximum Connections	10

Notes: Model specifications are subject to change without prior notice. The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time. The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations. If usage requirements exceed the specifications above, please contact our regional partners for professional advice.