Technical Specifications

Hardware

CPU:
Intel Celeron J3455 quad-core 1.5GHz, burst up to 2.3GHz

Hardware encryption engine:
Yes (AES-NI)

Hardware transcoding engine:
-Supported codecs: H.264 (AVC), H.265 (HEVC), MPEG-2, VC-1
-Maximum resolution: 4K (4096 x 2160)
-Maximum frames per second (FPS): 30

Memory:
4 GB DDR3L SO-DIMM (expandable up to 8 GB)

Compatible drive type:
4 x 3.5" or 2.5" SATA SSD/HDD (drives not included)
2 x M.2 NVMe 2280 SSD (drives not included)

External port:
-2 x USB 3.0 port
-1 x eSATA port

Size (HxWxD):
166 x 199 x 223 mm

Weight:
2.28 kg

LAN:
2 x 1GbE (RJ-45)

Wake on LAN/WAN:
Yes

Scheduled power on/off:
Yes

System fan:
2 (92 x 92 x 25 mm)

AC input power voltage:
100V to 240V AC

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 Specifications

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+, exFAT

Supported RAID type:
Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10

Storage management:
-Maximum internal volumes: 512
-Maximum iSCSI targets: 32
-Maximum iSCSI LUNs: 256
-iSCSI LUN clone/snapshot support

SSD cache:
SSD read-write cache 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, PyccK11i:: , Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, Japanese and Chinese

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

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 replications: 64
-Maximum shared folder snapshots: 1,024
-Maximum system snapshots: 65,536

Directory Server for Windows Domain:
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)

MailPlus:
Intuitive webmail interface for MailPlus Server, customizable mail labels, filters, and user interface

Collaboration tools:
-Chat maximum users: 1,500
-Office maximum users: 200, maximum simultaneous editing users: 80
-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, 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 protocols: BT, HTTP, FTP, NZB, eMule, Thunder, FlashGet, QQDL Maximum concurrent download tasks: 80

Web Station:
Virtual host (up to 30 websites), PHP/MariaDB®, 3rd-party applications support

Other packages:
Video Station, Photo Station, Audio Station, DNS Server, RADIUS Server, iTunes® Server, Log Center, additional 3rd-party packages are available in Package Center

iOS/Android™ applications:
DS audio, DS cam, DS cloud, DS file, DS finder, DS get, DS note, DS photo, DS video, MailPlus

Windows Phone® applications:
DS audio, DS file, DS finder, DS get, DS photo, DS video

Environment and Packaging

Environment safety:
RoHS compliant

Package content:
-DS918+ main unit x 1
-Quick Installation Guide x 1
-Accessory pack x 1
-AC power adapter x 1
-RJ-45 LAN cable x 2

Optional accessories:
-D3NS1866L-4G
-Expansion Unit DX517
-VisualStation  VS360HD, VS960HD
-Surveillance Device License Pack
-MailPlus License Pack

Warranty:
3 years

*Model specifications are subject to change without notice. Please refer to www.synology.com for the latest information.

1. Performance figures may vary depending on environment, usage, and configuration.
2. DS918+ supports one Synology DX517, sold separately.
3. DS918+ can transcode 4K video to 1080p or lower. The maximum number of concurrent video transcoding channels supported may vary depending on the video codec, resolution, bitrate and FPS.
4. exFAT Access is purchased separately in Package Center.
5. The warranty period starts from the purchase date as stated on your purchase receipt.