Synology DiskStation DS918+ 4 bay NAS – DS918+
DiskStation DS918+
Powerful and scalable 4-bay NAS for growing businesses
Overview
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.
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. Learn more
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.
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
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. Learn more
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.
Security
Comprehensive built-in security tools are constantly updated to tackle evolving threats and protect your devices.
- (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)
Detailed Tech Specification
Hardware 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 | 4 GB DDR3L |
| Memory Module Pre-installed | 4 GB (4 GB x 1) |
| Total Memory Slots | 2 |
| Memory Expandable up to | 8 GB (4 GB x 2) |
| Notes | 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. |
Storage |
|
| Drive Bays | 4 |
| Maximum Drive Bays with Expansion Unit | 9 |
| M.2 Drive Slots | 2 (NVMe) |
| Compatible Drive Type* (See all supported drives) |
|
| Maximum Internal Raw Capacity | 56 TB (14 TB drive x 4) (Capacity may vary by RAID types) |
| Maximum Raw Capacity with Expansion Units | 126 TB (56 TB + 14 TB drive x 5) (Capacity may vary by RAID types) |
| Maximum Single Volume Size | 108 TB |
| Hot Swappable Drive |
✓ |
| Notes |
|
External Ports |
|
| RJ-45 1GbE LAN Port | 2 (with Link Aggregation / Failover support) |
| USB 3.0 Port | 2 |
| eSATA Port | 1 |
File System |
|
| Internal Drives |
|
| External Drives |
|
| Notes | exFAT Access is purchased separately in Package Center. |
Appearance |
|
| Size (Height x Width x Depth) | 166 mm x 199 mm x 223 mm |
| Weight | 2.28 kg |
| Notes | The rail kit is sold separatelty. |
Others |
|
| System Fan | 92 mm x 92 mm x 2 pcs |
| Fan Speed Mode |
|
| Brightness adjustable front LED indicators |
✓ |
| Power Recovery |
✓ |
| Noise Level* | 19.8 dB(A) |
| Scheduled Power On/Off |
✓ |
| Wake on LAN/WAN |
✓ |
| Power Supply Unit / Adapter | 100W |
| AC Input Power Voltage | 100V to 240V AC |
| Power Frequency | 50/60 Hz, Single Phase |
| Power Consumption* | 28.8 W (Access) 12.6 W (HDD Hibernation) |
| British Thermal Unit | 98.27 BTU/hr (Access) 42.99 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 |
|
Warranty |
3 Years |
Notes |
|
DSM Specifications ( See more ) |
|
Storage Management |
|
| Maximum Internal Volume Number | 512 |
| Maximum iSCSI Target Number | 128 |
| Maximum iSCSI LUN | 256 |
| iSCSI LUN Clone/Snapshot, Windows ODX |
✓ |
| SSD Read/Write Cache (White Paper) |
✓ |
| SSD TRIM |
✓ |
| Supported RAID Type |
|
| RAID Migration |
|
| Volume Expansion with Larger HDDs |
|
| Volume Expansion by Adding a HDD |
|
| Global Hot Spare Supported RAID Type |
|
File Services |
|
| File Protocol | CIFS/AFP/NFS/FTP/WebDAV |
| Maximum Concurrent CIFS/AFP/FTP Connections | 1000 |
| Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) | 2000 |
| Windows Access Control List (ACL) Integration |
✓ |
| NFS Kerberos Authentication |
✓ |
Account & Shared Folder |
|
| Maximum Local User Accounts | 2048 |
| Maximum Local Groups | 256 |
| Maximum Shared Folder | 512 |
| Maximum Shared Folder Sync Tasks | 8 |
High Availability Manager |
✓ |
Log Center |
✓ |
| Syslog Events per Second | 800 |
Virtualization |
|
| VMware vSphere 6 with VAAI |
✓ |
| Windows Server 2012 |
✓ |
| Windows Server 2012 R2 |
✓ |
| Windows Server 2016 |
✓ |
| Citrix Ready |
✓ |
| OpenStack |
✓ |
Add-on Packages (learn more about the complete add-on package list) |
|
Antivirus by McAfee (Trial) |
✓ |
Central Management System |
✓ |
Chat |
✓ |
| Maximum Users | 1500 |
| Notes |
|
Cloud Station Server |
✓ |
| Maximum Number of Concurrently Connected Devices | 1000 |
| Maximum Number of Concurrently Connected Devices (with RAM expansion) | 2000 |
| Maximum Number of Hosted Files (btrfs) | 1,000,000 |
| Maximum Number of Hosted Files (ext4) | 1,000,000 |
| Notes |
|
Document Viewer |
✓ |
Download Station |
✓ |
| Maximum Concurrent Download Tasks | 80 |
exFAT Access (optional) |
✓ |
MailPlus / MailPlus Server |
✓ |
| Free Email Accounts | 5 (Licenses required for additional accounts) |
| Maximum number of concurrent users | Up to 100 |
| Maximum Server Performance | 1,052,000 emails per day, approx. 32GB |
| Notes |
|
Media Server |
✓ |
| DLNA Compliance |
✓ |
Moments |
✓ |
| Facial recognition |
✓ |
| Subject recognition |
✓ |
| Auto Color & Rotate |
✓ |
| Moments Select |
✓ |
Snapshot Replication |
✓ |
| Maximum Snapshots per Shared Folder | 1024 |
| Maximum of system snapshots | 65536 |
Surveillance Station |
✓ |
| Maximum IP cam (Licenses required) | 40 (including 2 Free License) (See All Supported IP Cameras) |
| Total FPS (H.264)* | 1200 FPS @ 720p (1280×720) 840 FPS @ 1080p (1920×1080) 550 FPS @ 3M (2048×1536) 300 FPS @ 5M (2591×1944) 180 FPS @ 4K (3840×2160) |
| Total FPS (H.265)* | 1200 FPS @ 720p (1280×720) 1200 FPS @ 1080p (1920×1080) 900 FPS @ 3M (2048×1536) 550 FPS @ 5M (2591×1944) 300 FPS @ 4K (3840×2160) |
| Total FPS (MJPEG)* | 720 FPS @ 720p (1280×720) 500 FPS @ 1080p (1920×1080) 330 FPS @ 3M (2048×1536) 200 FPS @ 5M (2591×1944) |
| 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. |
Synology Drive |
✓ |
| Recommended Number of Hosted Files | 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 Connections for PC Clients | 450 (the number of connections that can be maintained when the recommended number of hosted files was reached) |
| Notes |
|
Synology Office |
✓ |
| Maximum Users | 1800 |
| Notes |
|
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 |
✓ |
| Recommended Virtual Machine Instances | 4 (Learn more) |
| Recommended Virtual DSM Number(Licenses required) | 4 (including 1 Free License) |
| Notes |
|
VPN Server |
✓ |
| Maximum Connections | 20 |
Environment & Packaging |
|
Environment |
RoHS Compliant |
Packaging Content |
|
Optional Accessories |
|
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