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, 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 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.
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
3Power button and indicator
4Drive status indicator
51GbE RJ-45 port
6Power port
7Kensington Security Slot
8Fan
9USB 3.0 port
10Reset 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
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 |
| SSD TRIM |
|
| 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 |
| 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 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) |
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 |
