Synology DS218+ NAS DiskStation 2-Bays

Synology DS218+ NAS DiskStation 2-Bays

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DiskStation DS218+

All-around storage solution optimized to safeguard your data

Compact yet powerful storage solution

Equipped with a dual-core processor and AES-NI hardware encryption engine, DS218+ delivers exceptional file transfer speeds. Supporting real-time 4K video streaming, DS218+ is ideal not only for protecting critical data but for storing ultra-high definition media contents as well.

CPU

Dual-core up to 2.5 GHz


Ultra Performance

113 MB/s encrypted reading, 112 MB/s encrypted writing

Encryption

AES-NI hardware encryption


Transcoding

4K Ultra HD video transcoding


Next-generation file system for better data protection

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Flexible Shared Folder / User Quota System provides comprehensive quota control on user accounts and shared folders
The Btrfs file system introduces advanced storage technologies and optimized snapshots to prevent data corruption and reduce maintenance overhead. While ensuring high-level data integrity, it also offers flexible, efficient data protection and recovery tools.
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Snapshot Replication provides schedulable and storage capacity-saving data protection with 1,024 shared folder backups and 65,000 system-wide snapshots
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File- or folder-level data restoration accelerates data recovery, providing more flexibility for businesses
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Automatic file self-healing detects and recovers corrupted files without user intervention
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4K Multimedia Server

Access and stream your 4K media content anytime and anywhere. DS218+ supports 4K H.264/H.265 online transcoding via Video Station and DS video, allowing 4K videos to be converted and played on the fly on other computers, smartphones, and media players that originally do not support Ultra HD formats. Learn more

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

Digital asset protection

Powered by Synology DiskStation Manager (DSM), Synology NAS offers advanced security measures to protect against sudden data loss and potential security holes. Learn more
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Security Advisor

Analyzes system settings, password strength, network preferences, and removes any possible malware.
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AppArmor

A kernel-level enhancement that blocks malicious programs from accessing unauthorized system resources.
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AES 256-bit encryption

Encrypt shared folders and network data transmission to keep data from unauthorized access.
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2-step verification

Prevent others from logging in to your DSM by generating a one-time password (OTP) on your mobile device.
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Trust Level

Customize the trust level in Package Center to avoid installing packages from untrusted sources, safeguarding your NAS from unknown or tampered package files.

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.
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Hardware Specifications

 CPU
 CPU Model  Intel Celeron J3355
 CPU Architecture  64-bit
 CPU Frequency  Dual Core 2.0 burst up to 2.5 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  2 GB DDR3L
 Memory Module Pre-installed  2GB (1 x 2GB)
 Total Memory Slots  2
 Memory Expandable up to  6 GB (2 GB + 4 GB)
 Storage
 Drive Bays  2
 Compatible Drive Type* 
 (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
 Maximum Internal Raw
 Capacity
 24 TB (12 TB drive 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.
  • The maximum single volume size is not directly related to the maximum raw capacity. (Learn more)
  • Expansion of the internal volume is only supported if the combined single volume size does not exceed the maximum limit of 108TB.
 External Ports
 RJ-45 1GbE LAN Port  1
 USB 3.0 Port  3
 eSATA Port  1
 Copy Button  
 File System
 Internal Drives
  • Btrfs
  • EXT4
 External Drives
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
 Notes  exFAT Access is purchased separately in Package Center.
 Appearance
 Size (Height x Width x Depth) 165 mm x 108 mm x 232.2 mm 
 Weight 1.30 kg 
 Others
 System Fan 92 mm x 92 mm x 1 pcs
 Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
 Brightness adjustable front LED
 indicators
 
 Power Recovery  
 Noise Level*  19.3 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*  17.23 W (Access) 
 5.4 W (HDD Hibernation) 
 British Thermal Unit  58.79 BTU/hr (Access) 
 18.43 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
C ertification
  • EAC
  • VCCI
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI
 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
 iSCSI LUN Clone/Snapshot,
 Windows ODX
 
 SSD TRIM  
 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  2048
 Maximum Local Groups  256
 Maximum Shared Folder  256
 Maximum Shared Folder Sync
 Tasks
 4
 Maximum Concurrent
 CIFS/AFP/FTP Connections
 500
 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  
 Chat  
 Maximum Users  1000
 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.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
 Cloud Station Server  
 Maximum Number of
 Concurrently Connected
 Devices
 500
 Maximum Number of
 Concurrently Connected
 Devices (with RAM expansion)
 1500
 Maximum Number of Synced
 Files (btrfs)
 1,000,000 / single file reaction time 681 ms
 Maximum Number of Synced
 Files (ext4)
 1,000,000 / single file reaction time 341 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.
 Document Viewer  
 Download Station  
 Maximum Concurrent
 Download Tasks
 80
 Drive  
 Maximum Number of Synced
 Files
 500,000 / single file reaction time 362 ms
 Maximum Numbe of
 Concurrent Connections for PC
 Clients
 450
 Notes
  • The Btrfs 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.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Non-encrypted shared folders were used during the aforementioned testing.
 exFAT Access (optional)  
 MailPlus / MailPlus Server  
 Free Email Accounts  5 (Licenses required for additional accounts)
 Recommended MailPlus Client   Number  Up to 45 (Btrfs) / 45 (ext4)
 Maximum Server Performance  181,000 (Btrfs) / 194,000 (ext4) emails per day, approx. 5.5 GB (Btrfs) / 5.9 GB (ext4)
 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 Compliance  
 Moments  
 Facial recognition  
 Subject recognition  
 Office  
 Maximum Users  400
 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.
  • 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
 Snapshot Replication  
 Maximum Snapshots per
 Shared Folder
 1024
 Maximum Snapshots of all
 Shared Folder
 65536
 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) 
 600 FPS @ 1080p (1920×1080) 
 350 FPS @ 3M (2048x1536) 
 250 FPS @ 5M (2591x1944) 
 120 FPS @ 4K (3840x2160)
 Total FPS (H.265)*  750 FPS @ 720p (1280x720) 
 750 FPS @ 1080p (1920×1080) 
 450 FPS @ 3M (2048x1536) 
 250 FPS @ 5M (2591x1944) 
 200 FPS @ 4K (3840x2160)
 Total FPS (MJPEG)*  450 FPS @ 720p (1280x720) 
 250 FPS @ 1080p (1920×1080) 
 160 FPS @ 3M (2048x1536) 
 130 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
 2 channel, 30 FPS @ 4K (4096 x 2160), H.264 (AVC)/H.265 (HEVC) or 
 2 channel, 30 FPS @ 1080p (1920×1080), H.264 (AVC)/H.265 (HEVC)/MPEG-2/VC-1
 Virtual Machine Manager  
 Maximum Virtual DSM
 Number (Licenses required)
 2 (including 1 Free License) (Learn more)
 VPN Server  
 Maximum Connections  20
 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
  • D3NS1866L-4G DDR3 non-ECC SO-DIMM
  • VS360HD
  • VS960HD
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