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Synology DS918+
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Synology DS218+
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Synology DS918+ (DS918+)

DiskStation DS918+

Powerful and scalable 4-bay NAS for growing businesses


High-speed scalable storage server

Synology DS918+ is designed for small and medium-sized businesses and IT enthusiasts. With a powerful built-in AES-NI hardware encryption engine, DS918+ provides exceptional encrypted file transmission. Also capable of transcoding up to two channels of H.265/H.264 4K videos at the same time, DS918+ is ideal for sharing and storing ultra-high definition media content.

Download Datasheet

CPU

Quad-core 1.5GHz, burst up to 2.3GHz

Network

Dual 1GbE LAN ports

Memory

4GB DDR3L, scalable up to 8GB

Performance

Over 225 MB/s and 221 MB/s encrypted sequential reading and writing

Satisfy your need for performance and capacity

DS918+ supports up to two M.2 NVMe 2280 SSDs, allowing fast system cache creation without occupying internal drive bays. Scalable up to 9 drives with a Synology Expansion Unit DX517, DS918+ answers the need for flexible storage capacity.

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

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

Analyze system settings, password strength and network preferences, and remove 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 avoid unauthorized data access.

2-step verification

Prevent others from logging in to your DSM by generating a six-digit 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.

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. 

Cloud Station Sharesync

Cloud Station Drive

Cloud Station Server

DS Cloud

4K Multimedia Server

Access and stream your 4K media content anytime and anywhere. DS918+ 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.

Collaboration Suite

Synology Office, Calendar and Chat guarantee a secure and high-performance private communication and user-friendly content organization.

All-in-one server

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

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.

Security

Comprehensive built-in security tools are constantly updated to protect your devices against evolving threats.

  • 1 Status indicator
  • 2 Drive status indicator
  • 3 Drive tray lock
  • 4 USB 3.0 port
  • 5 Power button and indicator
  • 6 Drive tray
  • 7 1GbE RJ-45 port
  • 8 Reset button
  • 9 eSATA port
  • 10 Power port
  • 11 Fan
  • 12 Kensington Security Slot
  • 13 USB 3.0 port
  • 14 M.2 NVMe SSD slot (bottom side)
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Synology DS218+ (DS218+)
DiskStationDS218+

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.

Download Datasheet

CPU

Dual-core 2GHz burst up to 2.5GHz

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 and user quota settings provide comprehensive quota control on all user accounts and shared folder

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 and provides 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 and other Synology NAS. "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

Analyze system settings, password strength and network preferences, and remove 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 avoid unauthorized data access.

2-step verification

Prevent others from logging in to your DSM by generating a six-digit 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 secure, customizable address, so that you can instantly access media and work files on any Internet-connected device at no additional charge.

Powered by Synology DSM

Synology Office

Collaborate on documents, spreadsheets, and slides in real time to boost team productivity.

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.

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

Hardware Specifications

CPU

CPU

CPU Modelwidth="50%">Intel Celeron J3355
CPU Architecturewidth="50%">64-bit
CPU Frequencywidth="50%">Dual Core 2.0 (base) / 2.5 (burst) GHz
Hardware Encryption Engine (AES-NI)width="50%">
Hardware Transcoding Enginewidth="50%">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

Memory

System Memorywidth="50%">2 GB DDR3L
Memory Module Pre-installedwidth="50%">2 GB (2 GB x 1)
Total Memory Slotswidth="50%">2
Memory Expandable up towidth="50%">6 GB (2 GB + 4 GB)
Noteswidth="50%">
  • Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.

Storage

Storage

Drive Bayswidth="50%">2
Compatible Drive Type* (See all supported drives)width="50%">
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Maximum Internal Raw Capacitywidth="50%">32 TB (16 TB drive x 2) (Capacity may vary by RAID types)
Maximum Single Volume Size*width="50%">108 TB
Hot Swappable Drivewidth="50%">
Noteswidth="50%">
  • "Compatible drive type" indicates 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.
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.

External Ports

External Ports

RJ-45 1GbE LAN Portwidth="50%">1
USB 3.0 Portwidth="50%">3
eSATA Portwidth="50%">1
USB / SD Copywidth="50%">

File System

File System

Internal Driveswidth="50%">
  • Btrfs
  • EXT4
External Driveswidth="50%">
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
Noteswidth="50%">exFAT Access is purchased separately in Package Center.

Appearance

Appearance

Size (Height x Width x Depth)width="50%">165 mm x 108 mm x 232.2 mm
Weightwidth="50%">1.30 kg

Others

Others

System Fanwidth="50%">92 mm x 92 mm x 1 pcs
Fan Speed Modewidth="50%">
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Brightness Adjustable Front LED Indicatorswidth="50%">
Power Recoverywidth="50%">
Noise Level*width="50%">19.3 dB(A)
Scheduled Power On / Offwidth="50%">
Wake on LAN / WANwidth="50%">
Power Supply Unit / Adapterwidth="50%">60 W
AC Input Power Voltagewidth="50%">100 V to 240 V AC
Power Frequencywidth="50%">50/60 Hz, Single Phase
Power Consumption*width="50%">17.23 W (Access)
5.4 W (HDD Hibernation)
British Thermal Unitwidth="50%">58.79 BTU/hr (Access)
18.43 BTU/hr (HDD Hibernation)
Noteswidth="50%">
  • Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
  • Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%

Temperature

Temperature

Operating Temperaturewidth="50%">5°C to 40°C (40°F to 104°F)
Storage Temperaturewidth="50%">-20°C to 60°C (-5°F to 140°F)
Relative Humiditywidth="50%">5% to 95% RH

Certification

Certification

colspan="2" width="75%" class="bottom_fix">
  • EAC
  • VCCI
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI

Warranty

Warranty

colspan="2" width="75%" class="bottom_fix">2 Years
Noteswidth="50%">The warranty period starts from the purchase date as stated on your purchase receipt. 

Environment

Environment

colspan="2" width="75%" class="bottom_fix">RoHS Compliant

Packaging Content

Packaging Content

colspan="2" width="75%" class="bottom_fix">
  • 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

Optional Accessories

colspan="2" width="75%" class="bottom_fix">
  • D3NS1866L-4G DDR3 non-ECC SO-DIMM
  • Surveillance Device License Pack
  • Expansion Unit: DX517 X 1
  • VS360HD
  • VS960HD

DSM Specifications

Storage Management

Storage Management

Maximum Internal Volume Numberwidth="50%">64
Maximum iSCSI Target Numberwidth="50%">128
Maximum iSCSI LUNwidth="50%">256
iSCSI LUN Clone/Snapshot, Windows ODXwidth="50%">
SSD TRIMwidth="50%">
Supported RAID Typewidth="50%">
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
RAID Migrationwidth="50%">Basic to RAID 1
Volume Expansion with Larger HDDswidth="50%">
  • Synology Hybrid RAID
  • RAID 1
Volume Expansion by Adding a HDDwidth="50%">Synology Hybrid RAID

File Services

File Services

File Protocolwidth="50%">CIFS/AFP/NFS/FTP/WebDAV
Maximum Concurrent CIFS/AFP/FTP Connectionswidth="50%">500
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion)width="50%">1,500
Windows Access Control List (ACL) Integrationwidth="50%">
NFS Kerberos Authenticationwidth="50%">

Account & Shared Folder

Account & Shared Folder

Maximum Local User Accountswidth="50%">2,048
Maximum Local Groupswidth="50%">256
Maximum Shared Folderwidth="50%">256
Maximum Shared Folder Sync Taskswidth="50%">8

Log Center

Log Center

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
Syslog Events per Secondwidth="50%">400

General Specifications

General Specifications

Networking Protocolswidth="50%">SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browserswidth="50%">
  • Chrome
  • Firefox
  • Edge
  • Internet Explorer 10 onwards
  • Safari 10 onwards
  • Safari (iOS 10 onwards)
  • Chrome (Android 6.0 onwards)
Supported Languagewidth="50%">English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文

Add-on Packages view the complete package list

Antivirus by McAfee (Trial)

Antivirus by McAfee (Trial)

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">

Central Management System

Central Management System

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">

Synology Chat

Synology Chat

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
Maximum Userswidth="50%">1,000
Noteswidth="50%">
  • The number of concurrent HTTP connections for Synology 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

Cloud Station Server

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
Recommended Number of Hosted Fileswidth="50%">1,000,000
Recommended Number of Concurrent Sync Clientswidth="50%">500 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Noteswidth="50%">
  • The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time.
  • The maximum number of hosted files refers to the maximum number of files that can be indexed and hosted by the Cloud Station Server service. RAM expansion was not used during testing.
  • Non-encrypted shared folders were used during the aforementioned testing.

Document Viewer

Document Viewer

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">

Download Station

Download Station

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
Maximum Concurrent Download Taskswidth="50%">80

exFAT Access (Optional)

exFAT Access (Optional)

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">

Synology MailPlus / MailPlus Server

Synology MailPlus / MailPlus Server

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
Free Email Accountswidth="50%">5 (Licenses required for additional accounts)
Maximum Number of Concurrent Userswidth="50%">50
Maximum Server Performancewidth="50%">623,000 emails per day, approx. 19GB
Noteswidth="50%">
  • The CPU and RAM usage were both under 80% when testing the maximum number of concurrent users.
  • For tested models with expandable memory, the maximum amount of RAM was 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

Media Server

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
DLNA Compliancewidth="50%">

Moments

Moments

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
Facial Recognitionwidth="50%">
Subject Recognitionwidth="50%">
Auto Color & Rotatewidth="50%">
Moments Selectwidth="50%">

Snapshot Replication

Snapshot Replication

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
Maximum Snapshots per Shared Folderwidth="50%">1,024
Maximum of System Snapshotswidth="50%">65,536

Surveillance Station

Surveillance Station

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
Maximum IP cam (Licenses required) width="50%">25 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)*width="50%">750 FPS @ 720p (1280x720)
600 FPS @ 1080p (1920x1080)
350 FPS @ 3M (2048x1536)
250 FPS @ 5M (2591x1944)
120 FPS @ 4K (3840x2160)
Total FPS (H.265)*width="50%">750 FPS @ 720p (1280x720)
750 FPS @ 1080p (1920x1080)
450 FPS @ 3M (2048x1536)
250 FPS @ 5M (2591x1944)
200 FPS @ 4K (3840x2160)
Total FPS (MJPEG)*width="50%">450 FPS @ 720p (1280x720)
250 FPS @ 1080p (1920x1080)
160 FPS @ 3M (2048x1536)
130 FPS @ 5M (2591x1944)
Noteswidth="50%">
  • 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.
  • Total FPS may be affected by other services running at the same time (e.g., archive tasks performed by Archive Vault).

Synology Drive

Synology Drive

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
Recommended Number of Hosted Fileswidth="50%">500,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
Recommended Number of Concurrent Sync Clientswidth="50%">450 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Noteswidth="50%">
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Exceeding the limits above may result in longer response time in file operations.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.

Synology Office

Synology Office

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
Maximum Userswidth="50%">400
Noteswidth="50%">
  • 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

Video Station

Video Station

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
Video Transcodingwidth="50%">4K Group 1 (See more)
Maximum Transcoding Channel Numberwidth="50%">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

Virtual Machine Manager

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
Recommended Virtual Machine Instanceswidth="50%">2 (Learn more)
Recommended Virtual DSM Number (Licenses required) width="50%">2 (including 1 Free License)
Noteswidth="50%">The specifications vary depending on system configuration and memory size.

VPN Server

VPN Server

colspan="2" width="75%" class="bottom_fix"data-value_yes="yes">
Maximum Connectionswidth="50%">30

Notes:

  • Model specifications are subject to change without prior notice.
  • The figures are based on Synology internal testing. No other services or applications are processed during the performance tests.
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