General DSM Specification

Networking protocol

SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN ™, L2TP)

File system

• Internal: Btrfs, ext4

• External: Btrfs, ext4, ext3, FAT, NTFS, HFS+, exFAT6

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: 108 TB

• Maximum of system snapshots: 65,5367

• Maximum internal volumes: 512

• Maximum iSCSI targets: 32

• Maximum iSCSI LUNs: 256

• iSCSI LUN clone/snapshot support

SSD cache

• Read-write cache support

• M.2 SSD support

File sharing capability

• Maximum local user accounts: 2,048

• Maximum local groups: 256

• Maximum shared folders: 512

• Maximum concurrent SMB/NFS/AFP/FTP connections: 1,000

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

Virtualization

VMware vSphere® 6.5, Microsoft Hyper-V®, Citrix®, OpenStack®

Security

Firewall, encrypted shared folder, 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 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,

, Polski, Magyar,

Português do Brasil, Português Europeu, Türkçe, Český,

ภาษาไทย,

Packages and Applications

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

Universal Search

Offer global search into applications and files

Hyper Backup

Support local backup, network backup, and backup data to public clouds

Active Backup for Server

Centralize data backup for Windows and Linux servers without client installation

Backup tools

DSM configuration backup, macOS Time Machine support, Cloud Station Backup

Shared folder sync - maximum tasks: 8

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 transfers: 1,000

Drive

• Maximum Number of Synced Files: 1,000,000 / single file reaction time 437 ms

• Maximum Number of Concurrent Connections for PC Clients: 550

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 cameras: 40 (total of 1,200 FPS at 720p, H.264) (includes two free camera licenses; additional cameras require the purchasing of

additional licenses)

Virtual Machine Manager

Deploy and run various virtual machines on Synology NAS, including Windows, Linux, or Virtual DSM

High Availability Manager

Reduce service downtime by setting up two identical NAS into one high-availability cluster

Snapshot Replication

• Maximum shared folder snapshots: 1,024

• Maximum replications: 32

Synology Directory Server

A flexible and cost-effective domain controller solution

VPN Server

Maximum connections: 20, supported VPN protocol: PPTP, OpenVPN™, L2TP/IPSec

MailPlus Server

Secure, reliable, and private mail solution with high-availability, load balancing, security and filtering design (Includes 5 free email account

licenses; additional accounts require the purchasing of additional licenses)