All stock codes associated to this product
DS218J, DS218J , 846504002818, 4711174722815
Overview
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.
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 tasksin 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, such as computers, mobile devices, and other Synology NAS whenever a
file is modified. "Intelliversioning" keeps the most important file versions to
better utilize storage space.
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 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.
Desktop Backup
Simplified backup solution for your Mac, PC, and mobile devices.
File Server/Management
Powerful built-in file management and sharing services.
DSM UI
Award-winning operating system with an intuitive user interface and powerful
capabilities.
Security
Comprehensive built-in security tools are constantly updated to tackle
evolving threats and protect your devices.
Multimedia
Complete multimedia solution for management, streaming, and playback.
- Status indicator
- LAN indicator
- Drive status indicator
- Power button and indicator
- Fan
- USB 3.0 port
- 7 Reset button
- 8 Power port
- 1GbE RJ-45 port
- Kensington Security Slot
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* |
- 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.
|
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 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 |
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 |
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 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) |
14 (including 2 Free License) |
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 |
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
|