DS1817

DiskStation DS1817

Powerful all-in-one private cloud station

High capacity, fully-featured powerhouse

DS1817 is a powerful, scalable 8-bay NAS delivering outstanding data transfer rates. With built-in dual 10GbE LAN ports in addition to dual Gigabit ports, DS1817 supports Link Aggregation and failover functions for maximum performance and service continuity.

Network
Two built-in 10GBASE-T LAN ports

Memory
4GB DDR3L, up to 8GB

High Performance
1,577 MB/s sequential reading

Scalability
Up to 18 drives with two DX517 expansion units

Engineered for reliability, backed by Synology

DS1817+ is designed to reliably store your data and is backed by Synology's three-year hardware warranty. An optional two-year extended warranty is available in select regions for up to five years of coverage.

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.

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.

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.

Maximize system uptime with Synology High Availability (SHA)

Enjoy a complete hardware and data redundancy solution with Synology High Availability (SHA) in case of unforeseen disasters. After joining two Synology NAS devices to form a high-availability cluster, the NAS acting as the active server will handle all data operations and services, while cloning the entire system to the passive standby server.

Automatic failover

Real-time protection, minimum data loss

No-hassle installation and maintenance

Maximize service availability for virtualization through iSCSI

Fully certified storage virtualization solutions

Synology iSCSI storage fully supports most virtualization solutions to enhance work efficiency with easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations and optimizes computation efficiency. Windows Offloaded Data Transfer (ODX) speeds up data transfer and migration rate. OpenStack Cinder support turns your Synology NAS into a block-based storage component.

Surveillance Station

Complete surveillance solution for recording, monitoring, and management.

Desktop Backup

Simplified backup solution for your Mac, PC, and mobile devices.

Public Cloud Integration

Backup and synchronize data easily between your public cloud accounts and 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.

Multimedia

Complete multimedia solution for management, streaming, and playback.

Hardware Specifications 
CPU
CPU ModelAnnapurna Labs Alpine AL-314
CPU Architecture32-bit
CPU FrequencyQuad Core 1.7 GHz
Hardware Encryption Engine
Memory
System Memory4 GB DDR3L
Memory Module Pre-installed4GB (1 x 4GB)
Total Memory Slots2
Memory Expandable up to8 GB (4 GB x 2)
Storage
Drive Bays8
Maximum Drive Bays with Expansion Unit18
Compatible Drive Type* (See all supported drives)3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
Maximum Internal Raw Capacity96 TB (12 TB drive x 8) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units216 TB (96 TB + 12 TB drive x 10) (Capacity may vary by RAID types)
Maximum Single Volume Size108 TB
Hot Swappable Drive
External Ports
RJ-45 1GbE LAN Port2 (with Link Aggregation / Failover support)
RJ-45 10GbE LAN Port2 (with Link Aggregation / Failover support)
USB 3.0 Port2
eSATA Port2
File System
Internal DrivesEXT4
External DrivesEXT4
EXT3
FAT
NTFS
HFS+
exFAT*
NotesexFAT Access is purchased separately in Package Center.
Appearance
Size (Height x Width x Depth)157 mm x 340 mm x 233 mm 
Weight5.31 kg 
Others
System Fan120 mm x 120 mm x 2 pcs
Fan Speed ModeCool Mode
Quiet Mode
Easy Replacement System Fan
Power Recovery
Noise Level*24.2 dB(A) 
Scheduled Power On/Off
Wake on LAN/WAN
Power Supply Unit / Adapter250W 
AC Input Power Voltage100V to 240V AC
Power Frequency50/60 Hz, Single Phase
Power Consumption*59.1 W (Access) 
26.4 W (HDD Hibernation) 
British Thermal Unit201.66 BTU/hr (Access) 
90.08 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
CCC
RCM
KC
FCC
CE
BSMI
Warranty3 Year Hardware Warranty, Extendable to 5 Year Coverage - EW201
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 Number256
Maximum iSCSI Target Number128
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
RAID 6
RAID 10
RAID MigrationBasic to RAID 1
Basic to RAID 5
RAID 1 to RAID 5
RAID 5 to RAID 6
Volume Expansion with Larger HDDsSynology Hybrid RAID
RAID 1
RAID 5
RAID 6
Volume Expansion by Adding a HDDSynology Hybrid RAID
RAID 5
RAID 6
JBOD
Global Hot Spare Supported RAID TypeSynology Hybrid RAID
RAID 1
RAID 5
RAID 6
RAID 10
File Sharing Capacity
Maximum Local User Accounts2048
Maximum Local Groups256
Maximum Shared Folder256
Maximum Shared Folder Sync Tasks4
Maximum Concurrent CIFS/AFP/FTP Connections500
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion)1000
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
High Availability Manager
Log Center
Syslog Events per Second400
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)
Central Management System
Chat
Maximum Users800
NotesThe number of concurrent HTTP connections for Chat was configured to the maximum.
For tested models with expandable memory, the maximum amount of RAM was installed.
Cloud Station Server
Maximum Number of Concurrently Connected Devices1000
Maximum Number of Concurrently Connected Devices (with RAM expansion)1200
Maximum Number of Hosted Files (ext4)500000
NotesThe 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.
Download Station
Maximum Concurrent Download Tasks50
Drive
Maximum Number of Hosted Files500000
Maximum Number of Concurrent Connections for PC Clients450
NotesThe EXT4 file system was used for the purpose of testing.
For tested models with expandable memory, the maximum amount of RAM was installed.
exFAT Access (optional)
Media Server
DLNA Compliance
Moments
Facial recognition
Subject recognition
Office
Maximum Users400
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
Surveillance Station
Maximum IP cam (Licenses required)30 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)*900 FPS @ 720p (1280x720) 
480 FPS @ 1080p (1920×1080) 
300 FPS @ 3M (2048x1536) 
250 FPS @ 5M (2591x1944) 
Total FPS (MJPEG)*480 FPS @ 720p (1280x720) 
300 FPS @ 1080p (1920×1080) 
250 FPS @ 3M (2048x1536) 
200 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 TranscodingGroup 1 - Type 2 (See more)
Maximum Transcoding Channel Number1 channel, 30 FPS @ 720p (1280x720), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1
Notes
VPN Server
Maximum Connections15
Environment & Packaging
EnvironmentRoHS Compliant
Packaging ContentMain Unit X 1
Welcome Note X 1
Accessory Pack X 1
AC Power Cord X 1
RJ-45 LAN Cable X 2
Optional AccessoriesSurveillance Device License Pack
RAM1600DDR3-4G DDR3 non-ECC SO-DIMM
Expansion Unit: DX517 X 2
VS360HD
VS960HD