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.
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.
Learn more
Desktop Backup
Simplified backup solution for your Mac, PC, and mobile devices.
Learn more
File Server/Management
Powerful built-in file management and sharing services.
Learn more
DSM UI
Award-winning operating system with an intuitive user interface and powerful capabilities.
Learn more
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
1Status indicator
2LAN indicator
3Drive status indicator
4Power button and indicator
5Fan
6USB 3.0 port
7Reset button
8Power port
91GbE RJ-45 port
10Kensington Security Slot
Specs
| Hardware Specifications |
| CPU |
| CPU Model |
Marvell Armada 385 88F6820 |
| CPU Architecture |
32-bit |
| CPU Frequency |
Dual Core 1.3 GHz |
| Hardware Encryption Engine |
|
| Memory |
| System Memory |
512 MB DDR3 |
| 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 |
24 TB (12 TB drive x 2) (Capacity may vary by RAID types) |
| Maximum Single Volume Size |
16 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 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 |
| 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 |
HFS+ is read only, max 2TB volume size.
exFAT Access is purchased separately in Package Center.
|
| Appearance |
| Size (Height x Width x Depth) |
165 mm x 100 mm x 225.5 mm |
| Weight |
0.88 kg |
| 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 |
60W |
| AC Input Power Voltage |
100V to 240V 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) |
| 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
CE
BSMI
EAC
CCC
RCM
KC
|
| 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 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 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 840 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 10KByte 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 |
| Drive |
|
| Maximum Number of Synced Files |
100,000 / single file reaction time 941 ms |
| Maximum Number of Concurrent Connections for PC Clients |
200 |
| Notes |
The EXT4 file system was used for the purpose of testing.
The maximum number of concurrent connections refers to the maximum number of connections that could be maintained when the maximum number of synced files was reached.
File reaction time refers to the preparation time required for other devices to start downloading a 10KByte file from a Synology NAS after the file has been added to the NAS.
Non-encrypted shared folders were used during the aforementioned testing.
|
| exFAT Access (optional) |
|
| Media Server |
|
| DLNA Compliance |
|
| Moments |
|
| Facial recognition |
|
| Subject recognition |
|
| 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
|
| 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 (1920×1080)
90 FPS @ 3M (2048x1536)
60 FPS @ 5M (2591x1944)
20 FPS @ 4K (3840x2160) |
| Total FPS (H.265)* |
420 FPS @ 720p (1280x720)
210 FPS @ 1080p (1920×1080)
140 FPS @ 3M (2048x1536)
90 FPS @ 5M (2591x1944)
30 FPS @ 4K (3840x2160) |
| Total FPS (MJPEG)* |
140 FPS @ 720p (1280x720)
70 FPS @ 1080p (1920×1080)
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. |
| 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
Disk Holder: Type C
VS360HD
VS960HD
|
