| Technical Specifications |
| Hardware |
|
| CPU |
Realtek RTD1296 4-core 1.4 GHz |
| Memory |
1 GB DDR4 |
| Compatible drive type |
4 x 3.5" or 2.5" SATA HDD/SSD (drives not included) |
| External port |
2 x USB 3.0 port |
| Size (HxWxD) |
184 x 168 x 230 mm |
| Weight |
2.21 kg |
| LAN |
1 x Gigabit (RJ-45) |
| Wake on LAN/WAN |
Yes |
| Scheduled power on/of |
Yes |
| System fan |
2 (80 x 80 mm) |
| AC input power voltage |
100 V to 240 V AC |
| Power frequency |
50/60 Hz, single phase |
| 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 |
| Maximum operating altitude |
5,000 m (16,400 ft) |
| General DSM Specifications |
|
| Networking protocol |
SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN™, L2TP) |
| File system |
• Internal: ext4
• External: ext4, ext3, FAT, NTFS, HFS+, exFAT3 |
| Supported RAID type |
Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 |
| Storage management |
• Maximum single volume size: 108TB
• Maximum internal volume: 64 |
| File sharing capability |
• Maximum local user account: 1,024
• Maximum local group: 256
• Maximum shared folder: 256
• Maximum concurrent SMB/NFS/AFP/FTP connection: 100 |
| Privilege |
Windows Access Control List (ACL), application privilege |
| Directory service |
Windows® AD integration: Domain users login via SMB/NFS/AFP/FTP/File Station, LDAP integration |
| Security |
Firewall, shared folder encryption, SMB encryption, FTP over SSL/TLS, SFTP, rsync over SSH, login auto block, Let's Encrypt support, HTTPS (customizable cipher suite) |
| Supported client |
Windows 7 onwards, Mac OS X® 10.11 onwards |
| Supported browser |
Chrome®, Firefox®, Edge®, Internet Explorer® 10 onwards, Safari® 10 onwards; Safari (iOS 10 onwards), Chrome (Android™ 6.0 onwards) on tablets |
| Packages and Applications |
| File Server & Synchronization |
|
| Synology Drive |
Provides a universal portal to synchronize files across various platforms, including Windows, macOS, Linux, Android and iOS
• Maximum number of hosted files: 100,000
• Maximum number of concurrent connections for PC clients: 200 |
| File Station |
Virtual drive, remote folder, Windows ACL editor, compressing/extracting archived files, bandwidth control for specific users or groups, creating sharing links, transfer logs |
| FTP Server |
Bandwidth control for TCP connections, custom FTP passive port range, anonymous FTP, FTP SSL/TLS and SFTP protocol, boot over the network with TFTP and PXE support, transfer logs |
| Cloud Sync |
One or two-way synchronization with public cloud storage providers including Alibaba Cloud OSS, Amazon Drive, Amazon S3-compatible storage, Backblaze B2, Baidu Cloud, Box, Dropbox, Google Cloud Storage, Google Drive, hubiC, MegaDisk, Microsoft OneDrive, OpenStack Swift-compatible storage, Tencent COS, WebDAV servers, Yandex Disk |
| Universal Search |
Offers global searches into applications and files |
| iSCSI Storage |
|
| iSCSI Manager |
• Maximum iSCSI target: 10
• Maximum iSCSI LUN: 10 |
| Data Protection & Backup Solution |
|
| Hyper Backup |
Supports local backup, network backup, and backup data to public clouds |
| Backup tools |
DSM configuration backup, macOS Time Machine support, Synology Drive Client desktop application
• Shared folder sync - maximum task number: 4 |
| Productivity & Collaboration |
|
| Collaboration tools |
Supports collaboration with instant message service Synology Chat, online editor Synology Office, and scheduling assistant Synology Calendar
• Chat maximum user: 10
• Office maximum user: 200
• Calendar: support CalDAV and access via mobile devices |
| Note Station |
Rich-text note organization and versioning, encryption, sharing, media embedding and attachments |
| Multimedia |
|
| Moments |
Supports smart AI album with facial and subject recognition, similar photo detection, and photo editing and sharing features. Mobile applications are available on iOS and Android devices. |
| Other packages |
Video Station, Photo Station, Audio Station, iTunes® Server |
| Surveillance |
|
| Surveillance Station |
Maximum IP camera: 16 (total of 480 FPS at 720p, H.264) (Including two free camera licenses; additional cameras require the purchasing of additional licenses) |
| All-in-One Server |
|
| VPN Server |
Maximum connection: 10, supported VPN protocol: PPTP, OpenVPN™, L2TP/IPSec |
| Mail Server |
Supported Mail Server Protocols: POP3, SMTP, IMAP, Support LDAP/AD account |
| Mail Station |
Webmail interface for Mail Server to receive emails from multiple POP3 mailboxes, customizable SMTP server |
| Web Station |
Virtual host (up to 30 websites), PHP/MariaDB®, third-party applications support |
| Other packages |
DNS Server, RADIUS Server, Log Center |
| Others |
|
| Storage Analyzer |
Volume and quota usage, total size of files, volume usage and trends based on past usage, size of shared folders, large files, most recently modified files, least recently accessed files |
| Antivirus Essential |
Full system scan, scheduled scan, white list customization, virus definition auto update |
| iOS/Android™ applications |
Synology Drive, DS audio, DS photo, DS video, DS cam, DS file, DS finder, DS note, Moments |
| Other packages |
Additional 3rd-party packages available in Package Center |
| Environment and Packaging |
|
| Environment safety |
RoHS compliant |
| Package content |
• DS420j main unit
• Quick Installation Guide
• Accessory pack
• AC power adapter and power cord
• RJ-45 LAN cable |
| Optional accessories |
• VisualStation VS360HD, VS960HD
• Surveillance Device License Pack |
| Warranty |
2 years2 |
