Synology DiskStation 2-Bay Network Attached Storage DS216j (White)

Synology DS216J DiskStation 2-Bay NAS Image 1 Zoom

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Synology DiskStation 2-Bay Network Attached Storage DS216j (White)
Model: DS216J

  • Marvell Armada 385 88F6820

  • 32-bit

  • Dual Core 1.0 GHz

  • 512 MB DDR3

  • 50/60 Hz, Single Phase

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Hardware Specifications

CPU Model: Marvell Armada 385 88F6820
CPU Architecture: 32-bit
CPU Frequency: Dual Core 1.0 GHz
Hardware Encryption Engine: Yes

System Memory: 512 MB DDR3

Drive Bays: 2
Compatible Drive Type*
2.5" SATA HDD (with optional 2.5" Disk Holder)
2.5" SATA SSD (with optional 2.5" Disk Holder)
Maximum Internal Raw Capacity: 20 TB (10 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:
HFS+ is read only, max 2TB volume size.
exFAT Access is purchased separately in Package Center.

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

System Fan: 92 mm x 92 mm x 1 pcs
Fan Speed Mode:
Cool Mode
Quiet Mode
Low-power Mode

Brightness adjustable front LED indicators: Yes
Power Recovery: Yes
Noise Level*: 18.2 dB(A)
Scheduled Power On/Off: Yes
Wake on LAN/WAN: Yes
Power Supply Unit / Adapter: 60W
AC Input Power Voltage: 100V to 240V AC
Power Frequency: 50/60 Hz, Single Phase

Power Consumption*:
14.85 W (Access)
6.95 W (HDD Hibernation)
British Thermal Unit:
50.63 BTU/hr (Access)
23.71 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

FCC Class B
CE Class B
BSMI Class B
Warranty: 2 Years
Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
Noise Level Testing Environment: Fully loaded with WD 1TB WD10JFCX hard drive(s) in idle; Two G.R.A.S. Type 40AE microphones, each set up at 1 meter away from the Synology NAS front and rear; Background noise: 17.2 dB(A); Temperature: 23.6˚C; Humidity: 58.2%.

DSM Specifications

Storage Management
Maximum Internal Volume Number: 256
Maximum iSCSI Target Number: 10
Maximum iSCSI LUN: 10

Supported RAID Type:
Synology Hybrid RAID
RAID Migration: Basic to RAID 1
Volume Expansion with Larger HDDs:
Synology Hybrid RAID
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: 128
Windows Access Control List (ACL) Integration: Yes
NFS Kerberos Authentication: Yes
Log Center: Yes
Syslog Events per Second: 100

Add-on Packages

Maximum Users: 10
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.
For tested models with expandable memory, the maximum amount of RAM was installed.

Cloud Station Server
Maximum Number of Concurrently Connected Devices: 128
Maximum Number of Synced Files (ext4): 100,000 / single file reaction time 1038 ms
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): Yes
Media Server: Yes
DLNA Certification: Yes
Office: Yes
Maximum Users: 10
Maximum Simultaneous Editing Users: 10
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): 10 (including 2 Free License)

Total FPS (H.264)*:
300 FPS @ 720p (1280x720)
150 FPS @ 1080p (1920×1080)
100 FPS @ 3M (2048x1536)
40 FPS @ 5M (2591x1944)

Total FPS (MJPEG)*:
150 FPS @ 720p (1280x720)
75 FPS @ 1080p (1920×1080)
50 FPS @ 3M (2048x1536)
25 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: RoHS Compliant

Main Unit
Welcome Note
Accessory Pack
AC Power Adapter
AC Power Cord
RJ-45 LAN Cable

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