Synology DS918+ Diskless 4-bay, Intel Celeron J3455 Quad Core 1.5 burst up to 2.3 GHz, 4 GB DDR3L, H.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30.
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.
Quad-core 1.5GHz burst up to 2.3GHz
Dual 1GbE LAN ports
4GB DDR3L, scalable up to 8GB
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.
Analyzes system settings, password strength, network preferences, and removes any possible malware.
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.
Prevent others from logging in to your DSM by generating a one-time password (OTP) on your mobile device.
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, 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
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
Complete surveillance solution for recording, monitoring, and management.
Synology Office, Calendar and Chat guarantee a secure and high-performance private communication and user-friendly content organization.
Save additional investment by integrating various network services, web/mail services, management applications into your NAS.
Award-winning operating system with an intuitive user interface and powerful capabilities.
Simplified backup solution for your Mac, PC, and mobile devices.
Comprehensive built-in security tools are constantly updated to tackle evolving threats and protect your devices.
|CPU Model||Intel Celeron J3455|
|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|
|System Memory||4 GB DDR3L|
|Memory Module Pre-installed||4GB (1 x 4GB)|
|Total Memory Slots||2|
|Memory Expandable up to||8 GB (4 GB x 2)|
|Maximum Drive Bays with Expansion Unit||9|
|M.2 Drive Slots||2|
|Compatible Drive Type* (See all supported drives)||
|Maximum Internal Raw Capacity||40 TB (10 TB drive x 4) (Capacity may vary by RAID types)|
|Maximum Raw Capacity with Expansion Units||90 TB (10 TB drive x 9) (Capacity may vary by RAID types)|
|Maximum Single Volume Size||108 TB|
|Hot Swappable Drive|
|RJ-45 1GbE LAN Port||2 (with Link Aggregation / Failover support)|
|USB 3.0 Port||2|
|Notes||exFAT Access is purchased separately in Package Center.|
|Size (Height x Width x Depth)||166 mm x 199 mm x 223 mm|
|System Fan||92 mm x 92 mm x 2 pcs|
|Fan Speed Mode||
|Brightness adjustable front LED indicators|
|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)
|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|
|Notes||Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).|
|DSM Specifications ( See more )|
|Maximum Internal Volume Number||512|
|Maximum iSCSI Target Number||32|
|Maximum iSCSI LUN||256|
|iSCSI LUN Clone/Snapshot, Windows ODX|
|Supported RAID Type||
|Volume Expansion with Larger HDDs||
|Volume Expansion by Adding a HDD||
|Global Hot Spare Supported RAID Type||
|SSD Read/Write Cache (White Paper)|
|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||1000|
|Windows Access Control List (ACL) Integration|
|NFS Kerberos Authentication|
|High Availability Manager|
|Syslog Events per Second||800|
|VMware vSphere 6 with VAAI|
|Windows Server 2012|
|Windows Server 2012 R2|
|Add-on Packages (learn more about the complete add-on package list)|
|Antivirus by McAfee (Trial)|
|Central Management System|
|Cloud Station Server|
|Maximum Number of Concurrently Connected Devices||1000|
|Maximum Number of Concurrently Connected Devices (with RAM expansion)||2000|
|Maximum Number of Synced Files (btrfs)||1,000,000 / single file reaction time 744 ms|
|Maximum Number of Synced Files (ext4)||1,000,000 / single file reaction time 630 ms|
|Maximum Concurrent Download Tasks||80|
|exFAT Access (optional)|
|MailPlus / MailPlus Server|
|Free Email Accounts||5 (Licenses required for additional accounts)|
|Recommended MailPlus Client Number||Up to 90 (Btrfs) / 90 (ext4)|
|Maximum Server Performance||840,000 (Btrfs) / 1,014,000 (ext4) emails per day, approx. 25.6 GB (Btrfs) / 30.9 GB (ext4)|
|Maximum Simultaneous Editing Users||80|
|Maximum Snapshots per Shared Folder||1024|
|Maximum Snapshots of all Shared Folder||65536|
|Maximum IP cam (Licenses required)||40 (including 2 Free License) (See All Supported IP Cameras)|
|Total FPS (H.264)*||1200 FPS @ 720p (1280x720)
840 FPS @ 1080p (1920×1080)
400 FPS @ 3M (2048x1536)
300 FPS @ 5M (2591x1944)
180 FPS @ 4K (3840x2160)
|Total FPS (MJPEG)*||480 FPS @ 720p (1280x720)
400 FPS @ 1080p (1920×1080)
330 FPS @ 3M (2048x1536)
200 FPS @ 5M (2591x1944)
|Total FPS (H.265)*||1200 FPS @ 720p (1280x720)
1200 FPS @ 1080p (1920×1080)
600 FPS @ 3M (2048x1536)
400 FPS @ 5M (2591x1944)
300 FPS @ 4K (3840x2160)
|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 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
|Environment & Packaging|