| 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 | 2 GB DDR3L |
| Memory Module Pre-installed | 2 GB (2 GB x 1) |
| Total Memory Slots | 2 |
| Memory Expandable up to | 6 GB (2 GB + 4 GB) |
| 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 | 2 |
| Maximum Drive Bays with Expansion Unit | 7 |
| Compatible Drive Type* (See all supported drives) |
|
| Maximum Internal Raw Capacity | 28 TB (14 TB drive x 2) (Capacity may vary by RAID types) |
| Maximum Raw Capacity with Expansion Units | 98 TB (28 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 | 3 |
| eSATA Port | 1 |
| Copy Button | |
| File System | |
| Internal Drives |
|
| External Drives |
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| 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 |
| Notes | The rail kit is sold separatelty. |
| Others | |
| System Fan | 92 mm x 92 mm x 1 pcs |
| Fan Speed 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 | 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 | 500 |
| Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) | 1500 |
| 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 | 500 |
| Maximum Number of Concurrently Connected Devices (with RAM expansion) | 1500 |
| 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) 800 FPS @ 1080p (1920×1080) 350 FPS @ 3M (2048×1536) 280 FPS @ 5M (2591×1944) 170 FPS @ 4K (3840×2160) |
| Total FPS (H.265)* | 1200 FPS @ 720p (1280×720) 1200 FPS @ 1080p (1920×1080) 600 FPS @ 3M (2048×1536) 480 FPS @ 5M (2591×1944) 200 FPS @ 4K (3840×2160) |
| Total FPS (MJPEG)* | 450 FPS @ 720p (1280×720) 250 FPS @ 1080p (1920×1080) 200 FPS @ 3M (2048×1536) 100 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 | 2 (Learn more) |
| Recommended Virtual DSM Number (Licenses required) | 2 (including 1 Free License) |
| Notes |
|
| VPN Server | |
| Maximum Connections | 20 |
| Environment & Packaging | |
| Environment | RoHS Compliant |
| Packaging Content |
|
| Optional Accessories |
|
Synology DiskStation DS718+ High performance Warranty 3 years
- 2-bay DiskStation (up to 7-bay), Quad Core 1.5 GHz (turbo to 2.3 GHz), 2GB RAM (up to 6GB)
- Warranty 3 years
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