Specifications
Hardware
CPU Realtek RTD1619B
Memory 1 GB DDR4
Compatible drive types
•  2 x 3.5" or 2.5" SATA HDD/SSD (drives not included.)4
•  Synology only guarantees full functionality, reliability, and performance for Synology
drives listed on the compatibility list. The use of non-validated components may limit
certain functionality and result in data loss and system instability5
Hot swappable drives No
External ports 2 x USB 3.2 Gen 1 ports
Form factor Desktop
Size (HxWxD) 165 x 100 x 225.5 mm
Weight 0.88 kg
LAN ports 1 x 1GbE RJ-45
Wake on LAN/WAN Yes
Scheduled power on/off Yes
System fans 1 x (92 x 92 x 25 mm)
AC input power voltage 100 V to 240 V AC
Power frequency 50/60 Hz, single phase
Operating environment •  Temperature: 0°C to 40°C (32°F to 104°F)
•  Relative humidity: 8% to 80% RH
Storage environment •  Temperature: -20°C to 60°C (-5°F to 140°F)
•  Relative humidity: 5% to 95% RH
Maximum operating altitude 5,000 m (16,400 ft)
DATASHEET | DiskStation DS223j
General DSM Specifications
Networking protocols SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, and VPN (PPTP,
OpenVPNâ„¢, L2TP)
File systems •  Internal: Btrfs1, ext4
•  External: Btrfs1, ext4, ext3, FAT32, NTFS, HFS+, exFAT
Supported RAID types Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1
Storage management
•  Max. single volume size: 108 TB
•  Max. number of system snapshots: 4,0966
•  Max. number of internal volumes: 64
File sharing capabilities
•  Max. number of local user accounts: 1,024
•  Max. number of local groups: 256
•  Max. number of shared folders: 256
•  Max. number of concurrent SMB/NFS/AFP/FTP connections: 100
Privileges Windows® Access Control List (ACL) and application privileges
Directory services Connects with Windows® AD/LDAP servers enabling domain users to login via SMB/NFS/
AFP/FTP/File Station using their existing credentials
Security Firewall, shared folder encryption, SMB encryption, FTP over SSL/TLS, SFTP, rsync over
SSH, login auto block, Let's Encrypt support, and HTTPS (customizable cipher suite)
Supported browsers Google Chrome®, Firefox®, Microsoft Edge®, Safari® 14 and later, and Safari (iOS 14.0 and
later) on iPad, Chrome (Androidâ„¢ 11.0 and later) on tablets