DiskStation DS418j

Download Performance Compatibility Compare
Download Performance Compatibility Compare

DiskStation DS418j

Powerful entry-level 4-bay NAS for home data backup and multimedia streaming

Ideal Companion for Your Private Cloud

DS418j is a 4-bay NAS server designed for home and personal users to effectively manage, protect and share data. Its new 64-bit dual-core processor supports over 40 TB raw single volume capacity for flexible data management.

CPU

64-bit dual-core 1.4GHz

Memory

Twice the RAM size, 1GB DDR4

Fast Performance

over 112 MB/s encrypted reading and 87 MB/s encrypted writing performance

Eco-friendly

21.22 W in access and 8.97 W in HDD hibernation 

Stream content to your TV

Turn your Synology NAS into a home media hub and stream your digital contents to your favorite devices such as computers, mobile devices, Samsung TV, Roku players, Apple TV, Google Chromecast, and DLNA devices.

Centralized backup storage for your computers

Back up any devices, whether it is a Windows computer, Mac, or other devices. Synology's comprehensive multi-version backup solution can protect your PC and NAS against malicious attacks including the rising encryption-based ransomware threats. Learn more

Synology Hybrid RAID (SHR) technology

Storage management is easy with Synology Hybrid RAID (SHR) technology. SHR is an automated RAID management system allowing you to easily create and expand storage volumes and migrate RAID types without requiring details on RAID. SHR provides 1 to 2-disk redundancy to safeguard your data during drive failures.

Cost-effective

SHR maximizes the data capacity of your RAID when different sizes of HDDs are used. Calculate your RAID needs.

Easy Management

For novice users who have no technical background and still want to protect their data using RAID technology, a convenient installation wizard will guide you through all the steps during your first installation.

Scalability

You can add new disks on the fly in Storage Manager with a simple click. Learn more about SHR.

Flexibility

While creating a volume, you can plan ahead and leave empty and unallocated space for future usage.

Easy file access with QuickConnect

Access files on your Synology NAS over the Internet without the hassle of setting up port forwarding rules, DDNS, or other complicated network settings. QuickConnect allows you to connect via a simple customizable address (e.g. https://customID.quickconnect.to), so that you can instantly access media and work files on any Windows/Mac/Linux computer, laptop, or mobile device without additional charge.

Seamless integration with your devices

Synology mobile applications are designed to allow quick and secure access to your data wherever you are.

Seamless integration with your mobile devices

Synology mobile applications are designed to allow quick and secure access to your data wherever you are.

Powered by Synology DSM

Surveillance Station

Complete surveillance solution for recording, monitoring, and management.

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Desktop Backup

Simplified backup solution for your Mac, PC, and mobile devices.

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File Server/Management

Powerful built-in file management and sharing services.

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DSM UI

Award-winning operating system with an intuitive user interface and powerful capabilities.

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Security

Comprehensive built-in security tools are constantly updated to tackle evolving threats and protect your devices.

Learn more

Multimedia

Complete multimedia solution for management, streaming, and playback.

Learn more
  • 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
Hardware Specifications
CPU
CPU Model Realtek RTD1293
CPU Architecture 64-bit
CPU Frequency Dual Core 1.4 GHz
Hardware Encryption Engine
Memory
System Memory 1 GB DDR4
Storage
Drive Bays 4
Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Maximum Internal Raw Capacity 48 TB (12 TB drive x 4) (Capacity may vary by RAID types)
Maximum Single Volume Size 108 TB
Notes
  • "Compatible drive type" indicates the drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
  • The maximum single volume size is not directly related to the maximum raw capacity. (Learn more)
External Ports
RJ-45 1GbE LAN Port 1
USB 3.0 Port 2
File System
Internal Drives EXT4
External Drives
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
Notes exFAT Access is purchased separately in Package Center.
Appearance
Size (Height x Width x Depth) 184 mm x 168 mm x 230 mm
Weight 2.21 kg
Others
System Fan 80 mm x 80 mm x 2 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Low-power Mode
Brightness adjustable front LED indicators
Power Recovery
Noise Level* 20.6 dB(A)
Scheduled Power On/Off
Wake on LAN/WAN
Power Supply Unit / Adapter 90W
AC Input Power Voltage 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 21.22 W (Access)
8.97 W (HDD Hibernation)
British Thermal Unit 72.41 BTU/hr (Access)
30.61 BTU/hr (HDD Hibernation)
Environment Temperature
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
Certification
  • FCC Class B
  • CE Class B
  • BSMI Class B
Warranty 2 Years
Notes Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
DSM Specifications ( See more )
Storage Management
Maximum Internal Volume Number 256
Maximum iSCSI Target Number 10
Maximum iSCSI LUN 10
Supported RAID Type
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RAID Migration
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
Volume Expansion with Larger HDDs
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
Volume Expansion by Adding a HDD
  • Synology Hybrid RAID
  • RAID 5
  • JBOD
Global Hot Spare Supported RAID Type
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
SSD Support
SSD TRIM
File Sharing Capacity
Maximum Local User Accounts 1024
Maximum Local Groups 256
Maximum Shared Folder 256
Maximum Shared Folder Sync Tasks 2
Maximum Concurrent CIFS/AFP/FTP Connections 100
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Log Center
Syslog Events per Second 100
Add-on Packages (learn more about the complete add-on package list)
Chat
Maximum Users 10
Notes
  • The number of concurrent HTTP connections for Chat was configured to the maximum.
  • CPU and RAM usage were both under 80% when the number of maximum users was reached.
Cloud Station Server
Maximum Number of Concurrently Connected Devices 100
Maximum Number of Synced Files (ext4) 100,000 / single file reaction time 789 ms
Notes
  • The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time. For more information on file processing capability, please refer to the reaction time for file processing.
  • File reaction time refers to the preparation time required for other devices to start downloading a 1KByte file from a Synology NAS after the file has been added to the NAS. RAM expansion was not used during testing.
  • Non-encrypted shared folders were used during the aforementioned testing.
Download Station
Maximum Concurrent Download Tasks 30
exFAT Access (optional)
Media Server
DLNA Compliance
Office
Maximum Users 10
Maximum Simultaneous Editing Users 10
Notes
  • CPU and RAM usage were both under 80% when the number of maximum users was reached.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
Surveillance Station
Maximum IP cam (Licenses required) 16 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)* 480 FPS @ 720p (1280x720)
240 FPS @ 1080p (1920×1080)
150 FPS @ 3M (2048x1536)
100 FPS @ 5M (2591x1944)
70 FPS @ 4K (3840x2160)
Total FPS (H.265)* 480 FPS @ 720p (1280x720)
320 FPS @ 1080p (1920×1080)
224 FPS @ 3M (2048x1536)
160 FPS @ 5M (2591x1944)
100 FPS @ 4K (3840x2160)
Total FPS (MJPEG)* 224 FPS @ 720p (1280x720)
150 FPS @ 1080p (1920×1080)
100 FPS @ 3M (2048x1536)
60 FPS @ 5M (2591x1944)
Notes Surveillance Station throughput is tested with Axis network camera, using continuous recording with live view from Surveillance Station and motion detection by camera. Live view and recording are sharing the same stream from the camera.
Video Station
Video Transcoding Group 2 (See more)
VPN Server
Maximum Connections 5
Environment & Packaging
Environment RoHS Compliant
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Adapter X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 1
  • Quick Installation Guide X 1
Optional Accessories
  • Surveillance Device License Pack
  • VS360HD
  • VS960HD
General
Networking Protocols
  • CIFS
  • AFP
  • NFS
  • FTP
  • WebDAV
  • CalDAV
  • iSCSI
  • Telnet
  • SSH
  • SNMP
  • VPN (PPTP, OpenVPN)
Windows AD Domain Integration Domain Users login via Samba/AFP/FTP/File Station
HDD Management
  • HDD Hibernation
  • S.M.A.R.T.
  • Dynamic Bad Sector Mapping
Security
  • FTP over SSL/TLS
  • IP Auto-Block
  • Firewall
  • Encrypted Network Backup over Rsync
  • HTTPS Connection
Utilities Synology Assistant
Supported Clients
  • Windows 7 and 10
  • Mac OS X 10.11 onward
Supported Browsers
  • Chrome
  • Firefox
  • Internet Explorer 10 onwards
  • Safari 10 onwards
  • Safari (iOS 10 onwards)
  • Chrome (Android 6.0 onwards)
Supported Language English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, 日本語, 한국어, 繁體中文, 简体中文
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