DiskStation DS216+II

Efficient NAS ensuring data availability and high-quality video transcoding

Featuring a dual-core CPU with AES-NI hardware encryption engine, Btrfs file system support, and 4K UHD transcoding, DS216+II is a high-performance 2-bay NAS server aimed at small office and home users who want an efficient and secure storage solution to protect and share data, as well as enjoy on-the-fly video transcoding.

High-speed data transfer and hardware encryption engine

Equipped with a dual-core processor and AES-NI hardware encryption engine, DS216+II delivers blazingly fast file transfer speeds — even when handling encrypted data. DS216+II delivers high-speed performance, exceeding 111.78 MB/s reading and writing, while ensuring encrypted data transmissions at over 113.01 MB/s reading and 111.66 MB/s writing.

Easy installation, hassle-free maintenance

For friendly and effortless hard drive installation, DS216+II features a screwless drive bay design and hot-swappable support, allowing users to install 3.5" hard drives without a screwdriver. Installing and replacing drives is easier than ever.

4K Ultra HD video transcoding

Powered by a hardware-accelerated transcoding engine, DS216+II allows you to transcode H.264 4K videos to 1080p and stream them to high-definition TVs, digital media players, mobile handsets, and computers in the required format, making it easy to watch videos without having to install a 3rd party player.

Ultimate file center

File Station is a fast and secure feature for sharing and managing your files stored on DS216+II. Just drag-n-drop and upload data from Mac or PC. Advanced filters make it easy to search for documents, photos, or videos. With built-in FTP or email clients, DS216+II lets you organize and share files through an advanced web application effortlessly. You can even share files and folders with others by simply sending a link. Files can be reached on mobile devices via the companion mobile app DS file. HTTPS, SSL/TLS encryption, and link expiry dates also ensure file sharing over the Internet is highly secure.

Hardware Specifications
CPU
CPU Model	Intel Celeron N3060
CPU Architecture	64-bit
CPU Frequency	Dual Core 1.6 burst up to 2.48 GHz
Hardware Encryption Engine (AES-NI)
Hardware Transcoding Engine	H.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30
Memory
System Memory	1 GB DDR3
Storage
Drive Bay(s)	2
Compatible Drive Type* (See all supported drives)	3.5" SATA III / SATA II HDD 2.5" SATA III / SATA II HDD 2.5" SATA III / SATA II SSD
Maximum Internal Raw Capacity	20 TB (10 TB HDD x 2) (Capacity may vary by RAID types)
Maximum Single Volume Size	108 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.
External Ports
USB 2.0 Port	2
USB 3.0 Port	1
eSATA Port	1
USBCopy
File System
Internal Drives	Btrfs EXT4
External Drives	Btrfs EXT4 EXT3 FAT NTFS HFS+ exFAT*
Appearance
Size (Height x Width x Depth)	165 mm x 108 mm x 233.2 mm
Weight	1.25 kg
Others
RJ-45 1GbE LAN Port	1
Wake on LAN/WAN
System Fan	92 mm x 92 mm x 1 pcs
Fan Speed Mode	Cool Mode Quiet Mode
Wireless Support (dongle)
Brightness adjustable front LED indicators
Power Recovery
Noise Level*	18.2 dB(A)
Scheduled Power On/Off
Power Supply Unit / Adapter	60W
AC Input Power Voltage	100V to 240V AC
Power Frequency	50/60 Hz, Single Phase
Power Consumption*	17.40 W (Access)  7.40 W (HDD Hibernation)
British Thermal Unit	59.41 BTU/hr (Access)  25.27 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). Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 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: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
DSM Specifications ( See more )
Storage Management
Maximum Internal Volume Number	256
Maximum iSCSI Target Number	32
Maximum iSCSI LUN	256
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
SSD Support
SSD TRIM
File Sharing Capacity
Maximum User Accounts	2048
Maximum Groups	256
Maximum Shared Folder	256
Maximum Shared Folder Sync Tasks	4
Maximum Concurrent CIFS/AFP/FTP Connections	256
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Log Center
Syslog Events per Second	400
Add-on Packages (learn more about the complete add-on package list)
Antivirus by McAfee (Trial)
Central Management System
Cloud Station Server
Maximum Concurrent File Transfers	256
Docker DSM
Maximum Docker DSM Number (Licenses required)	1 (including 1 Free License) (Learn more)
Document Viewer
Download Station
Maximum Concurrent Download Tasks	80
exFAT Access (optional)
HiDrive Backup
MailPlus / MailPlus Server
Free Email Accounts	5 (Licenses required for additional accounts)
Recommended MailPlus Client Number	Up to 5
Maximum Server Performance	211,000 emails per day, approx. 6.4 GB
Notes	The CPU and RAM usages were both under 80% when testing recommended client numbers. For tested models with expandable memory, the maximum amount of RAM was installed. Read-write SSD cache was enabled in 5-bay (and above) NAS models with 2 SSDs units installed. The performance of the mail system will slightly decrease in high-availability mode due to data synchronization between the two servers. Functions that were enabled in all of the tests above: anti-spam, anti-virus, DNSBL, greylist, content scan, full-text search (English only).
Media Server
DLNA Certification
Snapshot Replication
Maximum Snapshots per Shared Folder	256
Maximum Snapshots of all Shared Folder	4096
SpreadSheet
Maximum Simultaneous Editing Users	110
Surveillance Station
Maximum IP cam (Licenses required)	25 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)*	750 FPS @ 720p (1280x720)  300 FPS @ 1080p (1920×1080)  160 FPS @ 3M (2048x1536)  100 FPS @ 5M (2591x1944)
Total FPS (MJPEG)*	300 FPS @ 720p (1280x720)  120 FPS @ 1080p (1920×1080)  90 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	4K Group 1 (See more)
Maximum Transcoding Channel Number	1 channel, 30 FPS @ 4K (4096 x 2160), H.264 (AVC)/H.265 (HEVC) or 3 channels, 30 FPS @ 1080p (1920×1080), H.264 (AVC)/H.265 (HEVC)/MPEG-2/VC-1
VPN Server
Maximum Connections	20
Environment & Packaging
Environment	RoHS Compliant
Packaging Content	Main Unit X 1 Welcome Note X 1 Accessory Pack X 1 AC Power Adapter X 1 AC Power Cord X 1 RJ-45 LAN Cable X 1
Optional Accessories	Camera License Pack VS360HD

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