DiskStation DS1817

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DiskStation DS1817

Powerful all-in-one private cloud solution

Features
Specs

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. Learn more

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

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.

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.

Powered by Synology DSM

Surveillance Station

Complete surveillance solution for recording, monitoring, and management.

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Desktop Backup

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

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Public Cloud Integration

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

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DSM UI

Award-winning operating system with an intuitive user interface and powerful capabilities.

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Security

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

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Multimedia

Complete multimedia solution for management, streaming, and playback.

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1 Status indicator
2 Alert indicator
3 Drive status indicator
4 Drive tray lock

5 Power button and indicator
6 LAN indicator
7 Fan
8 Power port

9 Kensington Security Slot
10 USB 3.0 port
11 10GbE RJ-45 port
12 1GbE RJ-45 port

13 eSATA port
14 Reset button

Hardware Specifications
CPU
CPU Model	Annapurna Labs Alpine AL-314
CPU Architecture	32-bit
CPU Frequency	Quad Core 1.7 GHz
Hardware Encryption Engine
Memory
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)
Storage
Drive Bays	8
Maximum Drive Bays with Expansion Unit	18
Compatible Drive Type* (See all supported drives)	3.5" SATA HDD 2.5" SATA HDD 2.5" SATA SSD
Maximum Internal Raw Capacity	96 TB (12 TB drive x 8) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units	216 TB (96 TB + 12 TB drive x 10) (Capacity may vary by RAID types)
Maximum Single Volume Size	108 TB
Hot Swappable Drive
External Ports
RJ-45 1GbE LAN Port	2 (with Link Aggregation / Failover support)
RJ-45 10GbE LAN Port	2 (with Link Aggregation / Failover support)
USB 3.0 Port	2
eSATA Port	2
File System
Internal Drives	EXT4
External Drives	EXT4 EXT3 FAT NTFS HFS+ exFAT*
Notes	exFAT Access is purchased separately in Package Center.
Appearance
Size (Height x Width x Depth)	157 mm x 340 mm x 233 mm
Weight	5.31 kg
Others
System Fan	120 mm x 120 mm x 2 pcs
Fan Speed Mode	Cool 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 / Adapter	250W
AC Input Power Voltage	100V to 240V AC
Power Frequency	50/60 Hz, Single Phase
Power Consumption*	59.1 W (Access) 26.4 W (HDD Hibernation)
British Thermal Unit	201.66 BTU/hr (Access) 90.08 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	EAC CCC RCM KC FCC CE BSMI
Warranty	3 Year Hardware Warranty, Extendable to 5 Year Coverage - EW201
Notes	Power 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 Number	256
Maximum iSCSI Target Number	32
Maximum iSCSI LUN	256
iSCSI LUN Clone/Snapshot, Windows ODX
SSD Read/Write Cache (White Paper)
SSD TRIM
Supported RAID Type	Synology Hybrid RAID Basic JBOD RAID 0 RAID 1 RAID 5 RAID 6 RAID 10
RAID Migration	Basic to RAID 1 Basic to RAID 5 RAID 1 to RAID 5 RAID 5 to RAID 6
Volume Expansion with Larger HDDs	Synology Hybrid RAID RAID 1 RAID 5 RAID 6
Volume Expansion by Adding a HDD	Synology Hybrid RAID RAID 5 RAID 6 JBOD
Global Hot Spare Supported RAID Type	Synology Hybrid RAID RAID 1 RAID 5 RAID 6 RAID 10
File Sharing Capacity
Maximum Local User Accounts	2048
Maximum Local Groups	256
Maximum Shared Folder	256
Maximum Shared Folder Sync Tasks	4
Maximum Concurrent CIFS/AFP/FTP Connections	1024
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
High Availability Manager
Log Center
Syslog Events per Second	400
Virtualization
VMware vSphere 6 with VAAI
Windows Server 2012
Windows Server 2012 R2
Citrix Ready
OpenStack
Add-on Packages (learn more about the complete add-on package list)
Central Management System
Chat
Maximum Users	800
Notes	The 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 Devices	1024
Maximum Number of Concurrently Connected Devices (with RAM expansion)	1200
Maximum Number of Synced Files (ext4)	500,000 / single file reaction time 763 ms
Notes	The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time. For more information on file processing capability, please refer to the reaction time for file processing. File reaction time refers to the preparation time required for other devices to start downloading a 10KByte file from a Synology NAS after the file has been added to the NAS. RAM expansion was not used during testing. Non-encrypted shared folders were used during the aforementioned testing.
Download Station
Maximum Concurrent Download Tasks	50
Drive
Maximum Number of Synced Files	500,000 / single file reaction time 362 ms
Maximum Number of Concurrent Connections for PC Clients	450
Notes	The EXT4 file system was used for the purpose of testing. The maximum number of concurrent connections refers to the maximum number of connections that could be maintained when the maximum number of synced files was reached. File reaction time refers to the preparation time required for other devices to start downloading a 10KByte file from a Synology NAS after the file has been added to the NAS. For tested models with expandable memory, the maximum amount of RAM was installed. Non-encrypted shared folders were used during the aforementioned testing.
exFAT Access (optional)
Media Server
DLNA Compliance
Moments
Facial recognition
Subject recognition
Office
Maximum Users	400
Notes	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
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)
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 Station
Video Transcoding	Group 1 - Type 2 (See more)
Maximum Transcoding Channel Number	1 channel, 30 FPS @ 720p (1280x720), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1
VPN Server
Maximum Connections	15
Environment & Packaging
Environment	RoHS Compliant
Packaging Content	Main Unit X 1 Welcome Note X 1 Accessory Pack X 1 AC Power Cord X 1 RJ-45 LAN Cable X 2
Optional Accessories	Surveillance Device License Pack RAM1600DDR3-4G DDR3 non-ECC SO-DIMM Expansion Unit: DX517 X 2 VS360HD VS960HD
General
Networking Protocols	CIFS AFP NFS FTP WebDAV CalDAV iSCSI Telnet SSH SNMP VPN (PPTP, OpenVPN)
Windows AD Domain Integration	Domain Users login via Samba/AFP/FTP/File Station
HDD Management	HDD Hibernation S.M.A.R.T. Dynamic Bad Sector Mapping
Security	FTP over SSL/TLS IP Auto-Block Firewall Encrypted Network Backup over Rsync HTTPS Connection
Utilities	Synology Assistant
Supported Clients	Windows 7 and 10 Mac OS X 10.11 onward
Supported Browsers	Chrome Firefox Internet Explorer 10 onwards Safari 10 onwards Safari (iOS 10 onwards) Chrome (Android 6.0 onwards)
Supported Language	English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, 日本語, 한국어, 繁體中文, 简体中文