Synology DS718+ DiskStation 2-Bay NAS System - Diskless

High performance NAS optimized for intensive workloads

Flexible scalability meeting growing needs

Powered by a quad-core processor and AES-NI hardware encryption engine, DS718+ delivers excellent file transfer speeds. With the scalability to expand up to 7 drives with Synology Expansion Unit DX517 and the support for real-time 4K/1080p video transcoding, DS718+ is ideal for centralizing data backup and storing ultra-high definition media contents.

Btrfs: Next generation storage efficiency

Btrfs file system introduces the most advanced storage technologies to meet the management needs of modern large scale businesses:

  • Flexible Shared Folder/User Quota System provides comprehensive quota control on all 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 makes data recovery fast and flexible
  • Automatic file self-healing detects and recovers corrupted files without user intervention

Ultimate file management and sharing

File Station is a web-based, fast and secure management tool built to allow easy, drag-and-drop operation without requiring any complex setup on Mac or PC. Advanced search and filtering tools allow for easy organization and sharing of files with just a link. Supports SMB, FTP, AFP, NFS, WebDAV, compatible with any environment.

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.

Real-time collaboration on your private cloud

Office is a collaboration package combining the convenience and usability of public clouds with the data privacy and security guaranteed by private clouds. It allows you to work seamlessly together on documents and spreadsheets in a protected environment.

4K Multimedia Server

Access and stream your 4K media content anytime and anywhere. DS718+ 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.

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.

Hyper Backup

Store multiple backup versions with block-level incremental data backup and cross-version deduplication.

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.

All-in-one server

Save additional investment by integrating various network services, web/mail services, management applications into your NAS.

  1. Drive status indicator
  2. Drive tray lock
  3. Status indicator
  4. LAN indicator
  5. USB copy button
  6. USB 3.0 port
  7. Power button and indicator
  8. Fan
  9. GbE RJ-45 port
  10. Power port
  11. Reset button
  12. USB 3.0 port
  13. Kensington Security Slot
  14. eSATA port

Specifications

CPU
CPU Model Intel Celeron J3455
CPU Architecture 64-bit
CPU Frequency Quad Core 1.5 burst up to 2.3 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
Maximum Drive Bays with Expansion Unit 7
Compatible Drive Type*
  • 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 Raw Capacity with Expansion Units 84 TB (12 TB drive x 7) (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.
  • 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 2 (with Link Aggregation / Failover support)
USB 3.0 Port 3
eSATA Port 1
USBCopy
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) 157 mm x 103.5 mm x 232 mm
Weight 1.74 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* 18.4 dB(A)
Scheduled Power On/Off
Wake on LAN/WAN
Power Supply Unit / Adapter 65W
AC Input Power Voltage 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 20.1 W (Access)
9.1 W (HDD Hibernation)
British Thermal Unit 68.58 BTU/hr (Access)
31.05 BTU/hr (HDD Hibernation)
Environment Temperature
Operating Temperature 5C to 40C (40F to 104F)
Storage Temperature -20C to 60C (-5F to 140F)
Relative Humidity 5% to 95% RH
Certification
  • FCC Class B
  • CE Class B
  • BSMI Class B
Warranty 3 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 512
Maximum iSCSI Target Number 32
Maximum iSCSI LUN 256
iSCSI LUN Clone/Snapshot, Windows ODX
Supported RAID Type
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
RAID Migration
  • Basic to RAID 1
  • Basic to RAID 5 (with Expansion Unit)
  • RAID 1 to RAID 5 (with Expansion Unit)
  • RAID 5 to RAID 6 (with Expansion Unit)
Volume Expansion with Larger HDDs
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
Volume Expansion by Adding a HDD
  • Synology Hybrid RAID
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • JBOD (with Expansion Unit)
Global Hot Spare Supported RAID Type
  • Synology Hybrid RAID
  • RAID 1 (with Expansion Unit)
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
SSD Support
SSD Read/Write Cache
SSD TRIM
File Sharing Capacity
Maximum Local User Accounts 2048
Maximum Local Groups 256
Maximum Shared Folder 512
Maximum Shared Folder Sync Tasks 8
Maximum Concurrent CIFS/AFP/FTP Connections 500
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
High Availability Manager
Log Center
Syslog Events per Second 800
Virtualization
VMware vSphere 6 with VAAI
Windows Server 2012
Windows Server 2012 R2
Citrix Ready
OpenStack
Add-on Packages
Antivirus by McAfee (Trial)
Central Management System
Chat
Maximum Users 1500
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 862 ms
Maximum Number of Synced Files (ext4) 1,000,000 / single file reaction time 351 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
Download Station
Maximum Concurrent Download Tasks 80
exFAT Access (optional)
MailPlus / MailPlus Server
Free Email Accounts 5
Recommended MailPlus Client Number Up to 90 (Btrfs) / 90 (ext4)
Maximum Server Performance 831,000 (Btrfs) / 966,000 (ext4) emails per day, approx. 25.4 GB (Btrfs) / 29.5 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
Office
Maximum Users 200
Maximum Simultaneous Editing Users 80
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
Maximum Snapshots per Shared Folder 1024
Maximum Snapshots of all Shared Folder 65536
Surveillance Station
Maximum IP cam (Licenses required) 40 (including 2 Free License)
Total FPS (H.264)* 1200 FPS @ 720p (1280x720)
800 FPS @ 1080p (19201080)
350 FPS @ 3M (2048x1536)
280 FPS @ 5M (2591x1944)
170 FPS @ 4K (3840x2160)
Total FPS (H.265)* 1200 FPS @ 720p (1280x720)
1200 FPS @ 1080p (19201080)
600 FPS @ 3M (2048x1536)
480 FPS @ 5M (2591x1944)
200 FPS @ 4K (3840x2160)
Total FPS (MJPEG)* 450 FPS @ 720p (1280x720)
250 FPS @ 1080p (19201080)
200 FPS @ 3M (2048x1536)
100 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
Maximum Transcoding Channel Number 2 channel, 30 FPS @ 4K (4096 x 2160), H.264 (AVC)/H.265 (HEVC) or
2 channel, 30 FPS @ 1080p (19201080), 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
  • Accessory Pack X 1
  • AC Power Adapter X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 2
  • Quick Installation Guide X 1
Optional Accessories
  • Surveillance Device License Pack
  • D3NS1866L-4G RAM Module
  • Expansion Unit: DX517 X 1
  • VS360HD
  • VS960HD

 

No additional files, specification sheets, guides or documentation found for product.

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Warranty: 36 Month Manufacturers Return To Base

Full manufacturers warranty details are available at the manufacturers (Synology) web site.

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