DS718+

DiskStation DS718+

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.

CPU
Quad-core burst up to 2.3GHz

RAM options
DDR3L 2GB, up to 6GB

Encryption Performance
Up to 226 MB/s reading and 184 MB/s writing

Transcoding
2-channel 4K H.264/H.265 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

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 and other Synology NAS. “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. Real-time collaboration on the same online documents to boost productivity. Version control for you to navigate all the changes and retrieve previous versions with just a click. Instant communication on Synology Chat during the editing of documents or spreadsheets.

4K Multimedia Server

Access and stream your favorite 4K content anywhere, anytime. DS218 supports 10-bit 4K H.265 online transcoding. With Video Station and DS video, you can convert and play 4K videos from any computer, mobile device, or other media players that don't support Ultra HD formats.

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.

Hardware Specifications 
CPU 
CPU ModelIntel Celeron J3455
CPU Architecture64-bit
CPU FrequencyQuad Core 1.5 burst up to 2.3 GHz
Hardware Encryption Engine (AES-NI) 
Hardware Transcoding EngineH.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 Memory2 GB DDR3L
Memory Module Pre-installed2GB (1 x 2GB)
Total Memory Slots2
Memory Expandable up to6 GB (2 GB + 4 GB)
Storage 
Drive Bays2
Maximum Drive Bays with Expansion Unit7
Compatible Drive Type* (See all supported drives)3.5" SATA HDD
 2.5" SATA HDD
 2.5" SATA SSD
  
Maximum Internal Raw Capacity24 TB (12 TB drive x 2) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units84 TB (24 TB + 12 TB drive x 5) (Capacity may vary by RAID types)
Maximum Single Volume Size108 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 Port2 (with Link Aggregation / Failover support)
USB 3.0 Port3
eSATA Port1
Copy Button 
File System 
Internal DrivesBtrfs
 EXT4
  
External DrivesBtrfs
 EXT4
 EXT3
 FAT
 NTFS
 HFS+
 exFAT*
  
NotesexFAT Access is purchased separately in Package Center.
Appearance 
Size (Height x Width x Depth)157 mm x 103.5 mm x 232 mm
Weight1.74 kg
Others 
System Fan92 mm x 92 mm x 1 pcs
Fan Speed ModeFull-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 / Adapter65W
AC Input Power Voltage100V to 240V AC
Power Frequency50/60 Hz, Single Phase
Power Consumption*20.1 W (Access)
 9.1 W (HDD Hibernation)
British Thermal Unit68.58 BTU/hr (Access)
 31.05 BTU/hr (HDD Hibernation)
Environment Temperature 
Operating Temperature5°C to 40°C (40°F to 104°F)
Storage Temperature-20°C to 60°C (-5°F to 140°F)
Relative Humidity5% to 95% RH
CertificationEAC
 VCCI
 CCC
 RCM
 KC
 FCC
 CE
 BSMI
  
Warranty3 Years
NotesPower 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 Number512
Maximum iSCSI Target Number32
Maximum iSCSI LUN256
iSCSI LUN Clone/Snapshot, Windows ODX 
SSD Read/Write Cache (White Paper)  
SSD TRIM 
Supported RAID TypeSynology Hybrid RAID
 Basic
 JBOD
 RAID 0
 RAID 1
 RAID 5 (with Expansion Unit)
 RAID 6 (with Expansion Unit)
 RAID 10 (with Expansion Unit)
  
RAID MigrationBasic 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 HDDsSynology Hybrid RAID
 RAID 1
 RAID 5 (with Expansion Unit)
 RAID 6 (with Expansion Unit)
  
Volume Expansion by Adding a HDDSynology Hybrid RAID
 RAID 5 (with Expansion Unit)
 RAID 6 (with Expansion Unit)
 JBOD (with Expansion Unit)
  
Global Hot Spare Supported RAID TypeSynology Hybrid RAID
 RAID 1 (with Expansion Unit)
 RAID 5 (with Expansion Unit)
 RAID 6 (with Expansion Unit)
 RAID 10 (with Expansion Unit)
  
File Sharing Capacity 
Maximum Local User Accounts2048
Maximum Local Groups256
Maximum Shared Folder512
Maximum Shared Folder Sync Tasks8
Maximum Concurrent CIFS/AFP/FTP Connections500
Windows Access Control List (ACL) Integration 
NFS Kerberos Authentication 
High Availability Manager 
Log Center 
Syslog Events per Second800
Virtualization 
VMware vSphere 6 with VAAI 
Windows Server 2012 
Windows Server 2012 R2 
Citrix Ready 
OpenStack 
Add-on Packages (learn more about the complete add-on package list)  
Antivirus by McAfee (Trial) 
Central Management System 
Chat 
Maximum Users1500
NotesThe 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 Devices500
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
NotesThe 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 Tasks80
Drive 
Maximum Number of Synced Files500,000 / single file reaction time 362 ms
Maximum Number of Concurrent Connections for PC Clients450
NotesThe 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 Accounts5 (Licenses required for additional accounts)
Recommended MailPlus Client NumberUp to 90 (Btrfs) / 90 (ext4)
Maximum Server Performance831,000 (Btrfs) / 966,000 (ext4) emails per day, approx. 25.4 GB (Btrfs) / 29.5 GB (ext4)
NotesThe 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 Users1800
NotesMultiple 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 Folder1024
Maximum Snapshots of all Shared Folder65536
Surveillance Station 
Maximum IP cam (Licenses required)40 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)*1200 FPS @ 720p (1280x720)
 800 FPS @ 1080p (1920×1080)
 350 FPS @ 3M (2048x1536)
 280 FPS @ 5M (2591x1944)
 170 FPS @ 4K (3840x2160)
Total FPS (H.265)*1200 FPS @ 720p (1280x720)
 1200 FPS @ 1080p (1920×1080)
 600 FPS @ 3M (2048x1536)
 480 FPS @ 5M (2591x1944)
 200 FPS @ 4K (3840x2160)
Total FPS (MJPEG)*450 FPS @ 720p (1280x720)
 250 FPS @ 1080p (1920×1080)
 200 FPS @ 3M (2048x1536)
 100 FPS @ 5M (2591x1944)
NotesSurveillance 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 Transcoding4K Group 1 (See more)
Maximum Transcoding Channel Number2 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)
NotesVirtual Machine Manager is not supported on hosts running Synology High Availability.
VPN Server 
Maximum Connections20
Environment & Packaging 
EnvironmentRoHS Compliant
Packaging ContentMain 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