CPU Marvell Armada 385 88F6820 dual-core 1.3GHz
Hardware encryption engine Yes
Memory DDR3 512MB
Compatible drive type 2 x 3.5” or 2.5” SATA HDD/SSD (drives not included)
External ports 2 x USB 3.0 port
Size (HxWxD) 165 x 100 x 225.5 mm
Weight 0.87 kg
LAN Gigabit (RJ-45) x 1
Wake on LAN/WAN Yes
Scheduled power on/off Yes
System fan 92 x 92 x 25 mm
AC input power voltage 100V to 240V
Power frequency 50/60Hz, single phase
Operating temperature 5°C to 40°C (40°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 Specification
Networking protocol SMB, AFP, NFS, FTP, WebDAV, CalDAV, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN ™ , L2TP)
File system • Internal: ext4
• External: ext4, ext3, FAT, NTFS, HFS+, exFAT2
Supported RAID type Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1
Storage management
• Maximum internal volume: 256
• Maximum iSCSI target: 10
• Maximum iSCSI LUN: 10
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 privileges
Hardware Overview
1 Status indicator 2 LAN indicator 3 Drive status indicator 4 Power button and indicator
5 Fan 6 USB 3.0 port 7 Reset button 8 Power port
9 1GbE RJ-45 port 10 Kensington Security Slot
Front Rear
1
2
4
3
6
5
7
8
9
10
Directory service Windows® AD integration: Domain users log in via SMB/NFS/AFP/FTP/File Station, LDAP integration
Security Firewall, encryption shared folder, SMB encryption, FTP over SSL/TLS, SFTP, rsync over SSH, login autoblock, Let’s Encrypt support, HTTPS
(customizable cipher suite)
Supported client Windows 7 and 10, Mac OS X® 10.11 onwards
Supported browser Chrome®, Firefox®, Internet Explorer® 10 onwards, Safari® 10 onwards; Safari (iOS 10 onwards), Chrome (Android™ 6.0 onwards)
Interface language English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svensk, Nederlands, Русский, Polski, Magyar,
Português do Brasil, Português Europeu, Türkçe, Český,

Packages and Applications
File Station Virtual drives, remote folders, Windows ACL editor, compressing/extracting archived files, bandwidth control for specific users/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
Universal Search Offer global search into applications and files
Hyper Backup Support local backup, network backup, and data backup to public clouds
Backup tool DSM configuration backup, macOS Time Machine support, Cloud Station Backup
Shared folder sync – maximum task number: 2
Cloud Station Suite
Sync data between multiple platforms by installing the client utilities on Windows, Mac, Linux, Android and iOS devices, while retaining up to
32 historical versions of files
Maximum concurrent file transfer: 100
Cloud Sync
One or two-way synchronization with public cloud storage providers including Amazon Drive, Amazon S3-compatible storage, Baidu cloud,
Box, Dropbox, Google Cloud Storage, Google Drive, hubiC, MegaDisk, Microsoft OneDrive, OpenStack Swift-compatible storage, WebDAV
servers, Yandex Disk
Surveillance Station Maximum IP camera: 14 (total of 420 FPS at 720p, H.264) (including two free camera licenses; additional cameras require the purchasing of
additional licenses)
VPN Server Maximum connection: 5, supported VPN protocol: PPTP, OpenVPN™, L2TP/IPSec
Mail Server Supported Mail Server protocol: POP3, SMTP, IMAP, support LDAP/AD account
Mail Station Webmail interface for Mail Server to receive emails from multiple POP3 mailboxes, customizable SMTP server
Collaboration Suite
• Chat maximum user: 10
• Office maximum user: 10, maximum simultaneous editing user: 10
• Calendar: support CalDAV and access via mobile devices
Note Station Rich-text note organization and versioning, encryption, sharing, media embedding and attachments
Storage Analyzer Volume and quota usage, the total size of files, volume usage and trends based on past usage, size of shared folders, largest/most/least frequently
modified files
Antivirus Essential Full system scan, scheduled scan, white list customization, virus definition auto-update
Download Station Supported download protocol: BT, HTTP, FTP, NZB, eMule, Thunder, FlashGet, QQDL
Maximum concurrent download task: 30
Web Station Virtual host (up to 30 websites), PHP/MariaDB®, third-party application support
Other packages Video Station, Photo Station, Audio Station, DNS Server, RADIUS Server, iTunes® Server, Log Center, additional 3rd-party packages are
available on Package Center
iOS/Android™ applications DS audio, DS cam, DS cloud, DS file, DS finder, DS get, DS note, DS photo, DS video
Windows Phone® applications DS audio, DS file, DS finder, DS get, DS photo, DS video
Environment and Packaging
Environment safety RoHS compliant
Package content
• DS218j 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
• 2.5″ Disk Holder Type C