All-around storage solution optimized to safeguard your data.

• Series: DiskStation Plus
• Subcategory: NAS
• Rackmount: No
• Drive size: 3.5" & 2.5"
• Maximum drives: 2
• Number of drives included: 2
• Total storage included (TB): 20TB
• Port types: LAN, USB 3.0, eSATA
• Total USB ports: 3

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
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.

• Flexible Shared Folder / User Quota System provides comprehensive quota control on user accounts and shared folders
• Snapshot Replication provides schedulable and storage capacity-saving data protection with 1,024 shared folder backups and 65,000 system-wide snapshots
• File- or folder-level data restoration accelerates data recovery, providing more flexibility for businesses
• Automatic file self-healing detects and recovers corrupted files without user intervention

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.

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.

• 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.

• Security Advisor: Analyzes system settings, password strength, network preferences, and removes any possible malware.
• AppArmor: A kernel-level enhancement that blocks malicious programs from accessing unauthorized system resources.
• AES 256-bit encryption: Encrypt shared folders and network data transmission to keep data from unauthorized access.
• 2-step verification: Prevent others from logging in to your DSM by generating a one-time password (OTP) on your mobile device.
• 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 simple customizable address, so that you can instantly access media and work files on any Windows/Mac/Linux computer, laptop, or mobile device without additional charge.

Powered by Synology DSM

• Office: Collaborate together on spreadsheets and documents on your own private cloud.
• Surveillance Station: Complete surveillance solution for recording, monitoring, and management.
• 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.
• Desktop Backup: Simplified backup solution for your Mac, PC, and mobile devices.
• Multimedia: Complete multimedia solution for management, streaming, and playback.

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): Yes
  • Hardware Transcoding Engine: H.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 × 2160); maximum frame rate per second (FPS): 30
• Memory:
  • System Memory: 2 GB DDR3L
  • Memory Module Pre-installed: 2GB (1 × 2GB)
  • Total Memory Slots: 2
  • Memory Expandable up to: 6GB (2GB + 4GB)
• Storage:
  • Drive Bays: 2
  • Compatible Drive Type*: 3.5" SATA HDD, 2.5" SATA HDD, 2.5" SATA SSD
  • Maximum Internal Raw Capacity: 20 TB (10 TB drive x 2) (Capacity may vary by RAID types)
  • Maximum Single Volume Size: 108 TB
  • Hot Swappable Drive: Yes
• 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.
  • 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
  • USBCopy: Yes
• 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: Yes
  • Power Recovery: Yes
  • Noise Level*: 19.3 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*: 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
  • Certification: FCC Class B, CE Class B, BSMI Class B
  • 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: 32
  • Maximum iSCSI LUN: 256
  • iSCSI LUN Clone/Snapshot, Windows ODX: Yes
  • 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: Yes
• 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: Yes
  • NFS Kerberos Authentication: Yes
  • Log Center: Yes
  • Syslog Events per Second: 400

ADD-ON PACKAGES:
* Antivirus by McAfee (Trial): Yes
* Central Management System: Yes
* Chat: Yes
* 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: Yes
  • 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 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.
  • Document Viewer: Yes
  • Download Station: Yes
  • Maximum Concurrent Download Tasks: 80
  • exFAT Access (optional): Yes
  • MailPlus / MailPlus Server: Yes
  • Free Email Accounts: 5
  • 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: Yes
  • DLNA Compliance: Yes
  • Office: Yes
  • Maximum Users: 200
  • Maximum Simultaneous Editing Users: 60
• 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
  • Snapshot Replication: Yes
  • 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)
  • Total FPS (H.264)*: 750 FPS @ 720p (1280×720), 375 FPS @ 1080p (1920×1080), 250 FPS @ 3M (2048×1536), 200 FPS @ 5M (2591×1944), 120 FPS @ 4K (3840×2160)
  • Total FPS (MJPEG)*: 450 FPS @ 720p (1280×720), 250 FPS @ 1080p (1920×1080), 160 FPS @ 3M (2048×1536), 130 FPS @ 5M (2591×1944)
  • Total FPS (H.265)*: 750 FPS @ 720p (1280×720), 750 FPS @ 1080p (1920×1080), 450 FPS @ 3M (2048×1536), 250 FPS @ 5M (2591×1944), 200 FPS @ 4K (3840×2160)
  • 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: Yes
  • Video Transcoding: 4K Group 1
  • Maximum Transcoding Channel Number: 2 channel, 30 FPS @ 4K (4096 × 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
  • VPN Server: Yes
  • Maximum Connections: 20

ENVIRONMENT & PACKAGING:

• Environment: RoHS Compliant