
DiskStation
DS418j
Synology DiskStation DS418j is a 4-bay NAS server designed for home and personal users to eectively
manage, protect and share data. Its new 64-bit dual-core processor provides large-capacity storage volume
support for exible data management. Synology DS418j is backed by Synology’s 2-year limited warranty.
Ideal Companion for Your Own Cloud
Synology DS418j is a powerful entry-level 4-bay network attached storage solution
equipped with a 64-bit dual-core 1.4 GHz processor and 1GB RAM, delivering
sequential reading throughput at over 112 MB/s and writing throughput at over
108 MB/s, and an encrypted sequential data transmission at over 112 MB/s reading
and 87 MB/s writing. The great combination of the 64-bit hardware and
DiskStation Manager (DSM) allows DS418j to take advantage of large-capacity HDDs
for exible storage volume management as well as ecient le sharing and data
backup.
Cross-Platform File Sharing and Data Synchronization
Synology DS418j supports comprehensive network protocols, ensuring a seamless le
sharing experience across Windows®, Mac®, and Linux® platforms. Windows AD and
LDAP integration allows DS418j to t quickly and eortlessly into any existing network
environment without the necessity to recreate user accounts. Cloud Sync keeps your
Dropbox, Google™ Drive, Microsoft OneDrive, Baidu Cloud, and Box storages in sync
with your personal DiskStation at home. The Cloud Station Suite enables you to sync
les among multiple devices — Windows PC, Mac, Linux, iOS or Android™ tablets/
phones — easily keeping everything up-to-date. All the seamless le sharing over the
Internet is protected at a high security level with the HTTPS, rewall, and IP auto-block
mechanisms supported by DS418j.
Highlights
Powerful entry-level 4-bay NAS for
•
home and personal usage
64-bit dual-core 1.4GHz processor
•
1 GB DDR4 memory, twice the size of its
•
predecessor
Over 112 MB/s sequential reading
•
throughput and 108 MB/s sequential
writing throughput
Over 112 MB/s encrypted sequential
•
reading throughput and 87 MB/s
encrypted sequential writing
throughput
Over 40 TB raw single volume capacity
•
Supports up to 16 IP cameras
•
Brightness adjustable front LED
•
indicators
1
1
Easy Backup Solutions
With block-level incremental backup and cross-version deduplication, Synology Hyper
Backup provides multi-version backup with optimized storage utilization and allows
data backup to multiple destinations - local shared folders, external hard drives, network
shared folders, rsync servers, and public cloud services.

24/7 Security Solution
Synology Surveillance Station oers a centralized interface to manage IP cameras
deployed in your workplace, allowing users traveling miles away to safeguard their
environments by watching live views, recording events, and taking snapshots with
computers or mobile devices. DS418j is an ideal surveillance solution as it is capable of
hosting up to 16 IP cameras (480FPS at 720p). In addition to its intuitive setup and
hassle-free interface, Surveillance Station features an optimized live view experience
with on-screen operations, smart analytic tools like motion detection, and an alert
system that sends instant notication through DS cam, SMS, and e-mail.
Anywhere/Anytime Availability
Synology provides mobile applications that allow you to enjoy the full variety of
your multimedia library over the Internet on the go. Available on iOS, Android™ and
Windows Phone® platforms, DS photo, DS audio, DS video and DS le mobilize your
Photo Station, Audio Station, Video Station and File Station by placing terabytes of
multimedia content at your ngertips. What’s more, DS get makes it possible for you to
manage and monitor your download tasks remotely anywhere, anytime.
Energy Ecient with Cool and Quiet Design
Synology DS418j is designed with energy eciency in mind. Compared with its average
PC counterpart, Synology DS418j consumes relatively little power at 21.22 watts while
accessing and 8.97 watts when hard drive hibernation is enabled. The scheduled power
on/o feature further reduces power consumption and operation cost.
Eective Sync & Backup Solution
Synology DS418j can serve as a
centralized backup destination, allowing
you to back up les from multiple devices
via Cloud Station Backup

Hardware Overview
1 Status indicator 2 LAN indicator 3 Power button and indicator 4 Drive status indicator
5 1GbE RJ-45 port 6 Power port 7 Kensington Security Slot 8 Fan
9 USB 3.0 port 10 Reset button
Technical Specications
Hardware
CPU Realtek RTD1293 dual-core 1.4GHz
Hardware encryption engine Yes
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 1GbE (RJ-45)
Wake on LAN/WAN Yes
Scheduled power on/o Yes
System fan 2 (80 x 80 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 specication
Networking protocol SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN ™ , L2TP)
File system
Supported RAID type Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
Storage management
File sharing capability
• Internal: ext4
• External: ext4, ext3, FAT, NTFS, HFS+, exFAT
• Maximum internal volume: 256
• Maximum iSCSI target: 10
• Maximum iSCSI LUN: 10
• Maximum local user account: 1,024
• Maximum local group: 256
• Maximum shared folder: 256
• Maximum concurrent SMB/NFS/AFP/FTP connection: 100
2

Privilege Windows Access Control List (ACL), application privileges
English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svensk, Nederlands, Русский, Polski, Magyar,
Português do Brasil, Português Europeu, Türkçe, Český,
Directory service
Security
Supported client
Supported browser
Interface language
Windows® AD integration: Domain users login via SMB/NFS/AFP/FTP/File Station, LDAP integration
Firewall, encryption shared folder, SMB encryption, FTP over SSL/TLS, SFTP, rsync over SSH, login auto block, Let's Encrypt support, HTTPS
(customizable cipher suite)
Windows 7 and 10, Mac OS X® 10.11 onwards
Chrome®, Firefox®, Internet Explorer® 10 onwards, Safari® 10 onwards; Safari (iOS 10 onwards), Chrome (Android™ 6.0 onwards)
Packages and Applications
File Station
FTP Server
Universal Search Oer global search into applications and les
Hyper Backup Support local backup, network backup, and data backup to public clouds
Backup tool
Cloud Station Suite
Cloud Sync
Surveillance Station
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
Note Station Rich-text note organization and versioning, encryption, sharing, media embedding and attachments
Storage Analyzer
Security Advisor Malware detection/removal, user account/password, network, system-related security scan
Antivirus Essential Full system scan, scheduled scan, white list customization, virus denition auto update
Download Station
Web Station Virtual host (up to 30 websites), PHP/MariaDB®, third-party application support
Other packages
iOS/Android™ applications DS audio, DS cam, DS cloud, DS le, DS nder, DS get, DS note, DS photo, DS video
Windows Phone® applications DS audio, DS le, DS nder, DS get, DS photo, DS video
Virtual drives, remote folders, Windows ACL editor, compressing/extracting archived les, bandwidth control for specic users/groups,
creating sharing links, transfer logs
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
DSM conguration backup, macOS Time Machine support, Cloud Station Backup
Shared folder sync - maximum task number: 2
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 les
Maximum concurrent le transfer: 100
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
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)
• Chat maximum user: 10
• Office maximum user: 10, maximum simultaneous editing user: 10
• Calendar: support CalDAV and access via mobile devices
Volume and quota usage, total size of les, volume usage and trends based on past usage, size of shared folders, largest/most/least frequently
modied les
Supported download protocol: BT, HTTP, FTP, NZB, eMule, Thunder, FlashGet, QQDL
Maximum concurrent download task: 30
Video Station, Photo Station, Audio Station, DNS Server, RADIUS Server, iTunes® Server, Log Center, third-party packages available on Package
Center
Environment and Packaging
Environment safety RoHS compliant
• DS418j main unit
Package content
Optional accessories
Warranty 2 years
*Model specications are subject to change without notice. Please refer to www.synology.com for the latest information.
1. Performance gures may vary depending on environment, usage, and conguration.
2. exFAT Access is purchased separately in Package Center.
• Quick Installation Guide
• Accessory pack
• AC power adapter and power cord
• RJ-45 LAN cable
• Synology Surveillance Video Decoder VS360HD
• Surveillance Device License Pack

SYNOLOGY INC.
Synology is dedicated to taking full advantage of the latest technologies to bring businesses and home users reliable and aordable ways to centralize data storage,
simplify data backup, share and sync les across dierent platforms, and access data on-the-go. Synology aims to deliver products with forward-thinking features
and the best in class customer services.
Copyright © 2017, Synology Inc. All rights reserved. Synology, the Synology logo are trademarks or registered trademarks of Synology Inc. Other product and
company names mentioned herein may be trademarks of their respective companies. Synology may make changes to specication and product descriptions at
anytime, without notice.
DS418j-2017-ENU-REV004
Headquarters
Synology Inc. 3F-3, No. 106, Chang An W. Rd., Taipei, Taiwan Tel: +886 2 2552 1814 Fax: +886 2 2552 1824
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Courbevoie, France
Tel: +33 147 176288
North & South America
Synology America Corp.
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Bellevue, WA 98006, USA
Tel: +1 425 818 1587
United Kingdom
Synology UK Ltd.
Unit C, Denbigh West
Business Park, Third Avenue
Bletchley, Milton Keynes
MK1 1DH, UK
Tel: +44 1908 366380
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125 40237 Düsseldorf
Deutschland
Tel: +49 211 9666 9666