DiskStation DS218j

Performance Compatibility Download Center Compare
Performance Compatibility Download Center Compare

DiskStation DS218j

A versatile entry-level 2-bay NAS for home and personal cloud storage

Cost-effective home storage server

Backup all your digital assets with Synology DS218j, a powerful 2-bay NAS with rapid data transmission and low power consumption, designed for home users.

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Eco-friendly

17.48 W in access, 7.03 W in HDD Hibernation

High Performance

Over 113 MB/s and 112 MB/s sequential reading and writing

Cloud Station Backup for PC protection

Featuring real-time incremental backup technology, your data stored on a PC can be backed up to a Synology NAS instantly, using minimal system resources, bringing a truly comprehensive and secure private cloud experience.

Incremental backup: fast while reducing performance impact

Cloud Station provides an optimized PC backup solution. With the incremental backup technology, Cloud Station backs up only the modified files and divides them into even smaller parts, demanding significantly less system resources than traditional backup methods.

Real-time backup saving you from massive data loss

Cloud Station Backup carries out the most complete backup tasks in real-time. When data is voluminous, real-time backup prevents massive data loss due to unexpected disaster during backup cycles.

Synchronize files across your devices

Cloud Station Suite provides real-time data synchronization across all your devices and other Synology NAS. "Intelliversioning" keeps the most important file versions to better utilize storage space. Learn more

Cloud Station Sharesync

Cloud Station Drive

Cloud Station Server

DS Cloud

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 secure, customizable address, so that you can instantly access media and work files on any Internet-connected device with no additional charge.

Seamless integration with your mobile devices

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

DS audio
DS Photo
DS video

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 protect your devices against evolving threats.

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Multimedia

Complete multimedia solution for management, streaming, and playback.

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  • 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

Hardware Specifications

CPU

CPU

CPU Model Marvell Armada 385 88F6820
CPU Architecture 32-bit
CPU Frequency Dual Core 1.3 GHz
Hardware Encryption Engine

Memory

Memory

System Memory 512 MB DDR3
Notes Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.

Storage

Storage

Drive Bays 2
Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD (with optional 2.5" Disk Holder)
  • 2.5" SATA SSD (with optional 2.5" Disk Holder)
Maximum Internal Raw Capacity 32 TB (16 TB drive x 2) (Capacity may vary by RAID types)
Maximum Single Volume Size* 16 TB
Hot Swappable Drive -
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 raw capacity is not limited by the maximum single volume size. Synology NAS models may utilize capacities over the maximum single volume size as long as each volume created is below the limit. (Learn more)

External Ports

External Ports

RJ-45 1GbE LAN Port 1
USB 3.0 Port 2

File System

File System

Internal Drives
  • EXT4
External Drives
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+*
  • exFAT*
Notes
  • HFS+ is read only, max 2TB volume size.
  • exFAT Access is purchased separately in Package Center.

Appearance

Appearance

Size (Height x Width x Depth) 165 mm x 100 mm x 225.5 mm
Weight 0.88 kg

Others

Others

System Fan 92 mm x 92 mm x 1 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Low-power Mode
Brightness Adjustable Front LED Indicators
Power Recovery
Noise Level* 18.2 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 60 W
AC Input Power Voltage 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 17.48 W (Access)
7.03 W (HDD Hibernation)
British Thermal Unit 59.68 BTU/hr (Access)
24 BTU/hr (HDD Hibernation)
Notes
  • Power consumption is measured when it's fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
  • Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%

Temperature

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

Certification

  • EAC
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI

Warranty

Warranty

2 Years
Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)

Environment

Environment

RoHS Compliant

Packaging Content

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

Optional Accessories

  • Surveillance Device License Pack
  • VS360HD
  • VS960HD
  • Disk Holder: Type C

DSM Specifications

Storage Management

Storage Management

Maximum Internal Volume Number 64
Maximum iSCSI Target Number 10
Maximum iSCSI LUN 10
Supported RAID Type
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
RAID Migration Basic to RAID 1
Volume Expansion with Larger HDDs
  • Synology Hybrid RAID
  • RAID 1
Volume Expansion by Adding a HDD Synology Hybrid RAID

File Services

File Services

File Protocol CIFS/AFP/NFS/FTP/WebDAV
Maximum Concurrent CIFS/AFP/FTP Connections 100
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication

Account & Shared Folder

Account & Shared Folder

Maximum Local User Accounts 1,024
Maximum Local Groups 256
Maximum Shared Folder 256
Maximum Shared Folder Sync Tasks 2

Log Center

Log Center

Syslog Events per Second 100

General Specifications

General Specifications

Networking Protocols SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
  • Chrome
  • Firefox
  • Edge
  • 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, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文

Add-on Packages view the complete package list

Synology Chat

Synology Chat

Maximum Users 10
Notes
  • The number of concurrent HTTP connections for Synology 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

Cloud Station Server

Recommended Number of Hosted Files 100,000
Recommended Number of Concurrent Sync Clients 100 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Notes
  • The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time.
  • The maximum number of hosted files refers to the maximum number of files that can be indexed and hosted by the Cloud Station Server service. RAM expansion was not used during testing.
  • Non-encrypted shared folders were used during the aforementioned testing.

Download Station

Download Station

Maximum Concurrent Download Tasks 50

exFAT Access (Optional)

exFAT Access (Optional)

Media Server

Media Server

DLNA Compliance

Moments

Moments

Facial Recognition

Surveillance Station

Surveillance Station

Maximum IP cam (Licenses required) 14 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)* 420 FPS @ 720p (1280x720)
120 FPS @ 1080p (1920x1080)
90 FPS @ 3M (2048x1536)
60 FPS @ 5M (2591x1944)
20 FPS @ 4K (3840x2160)
Total FPS (H.265)* 420 FPS @ 720p (1280x720)
210 FPS @ 1080p (1920x1080)
140 FPS @ 3M (2048x1536)
90 FPS @ 5M (2591x1944)
30 FPS @ 4K (3840x2160)
Total FPS (MJPEG)* 140 FPS @ 720p (1280x720)
70 FPS @ 1080p (1920x1080)
40 FPS @ 3M (2048x1536)
20 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.

Synology Drive

Synology Drive

Recommended Number of Hosted Files 100,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
Recommended Number of Concurrent Sync Clients 200 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Notes
  • Exceeding the limits above may result in longer response time in file operations.
  • EXT4 file system and non-encrypted shared folders were used during the aforementioned testing.

Synology Office

Synology Office

Maximum Users 200
Notes
  • Multiple files were opened for testing and each file was edited by 30 users simultaneously.
  • CPU and RAM usage were both under 80% when the number of maximum users was reached.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM

Video Station

Video Station

Video Transcoding Group 2 (See more)

VPN Server

VPN Server

Maximum Connections 10