Synology

DiskStation DS1817 Series

Synology DiskStation DS1817 Series

Powerful all-in-one private cloud solution

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-installed4 GB (4 GB x 1)
Total Memory Slots2
Memory Expandable up to8 GB (4 GB x 2)
NotesSynology 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 Bays8
Maximum Drive Bays with Expansion Unit18
Compatible Drive Type*
  • 3.5″ SATA HDD
  • 2.5″ SATA HDD
  • 2.5″ SATA SSD
Maximum Internal Raw Capacity112 TB (14 TB drive x 8) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units252 TB (112 TB + 14 TB drive x 10) (Capacity may vary by RAID types)
Maximum Single Volume Size108 TB
Hot Swappable Drive
Notes
  • “Compatible drive type” indicates the drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
  • The maximum raw capacity is not limited by the maximum single volume size. Synology NAS models may utilize capacities over the maximum single volume size as long as each volume created is below the limit.
  • Expansion of the internal volume is only supported if the combined single volume size does not exceed the maximum limit of 108TB.
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 Drives
  • EXT4
External Drives
  • EXT4
  • 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 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 / Adapter250W
AC Input Power Voltage100V to 240V AC
Power Frequency50/60Hz, 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)
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
Certification
  • EAC
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI
Warranty3-year hardware warranty, extendable to 5-year coverage – EW201
Notes
  • The warranty period starts from the purchase date as stated on your purchase receipt.
  • 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 
Storage Management
Maximum Internal Volume Number256
Maximum iSCSI Target Number128
Maximum iSCSI LUN256
iSCSI LUN Clone/Snapshot, Windows ODX
SSD Read/Write Cache 
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
  • RAID 10
Volume Expansion by Adding a HDD
  • Synology Hybrid RAID
  • JBOD
  • RAID 5
  • RAID 6
Global Hot Spare Supported RAID Type
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
File Services
File ProtocolCIFS/AFP/NFS/FTP/WebDAV
Maximum Concurrent CIFS/AFP/FTP Connections500
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion)1,000
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Account & Shared Folder
Maximum Local User Accounts2,048
Maximum Local Groups256
Maximum Shared Folder256
Maximum Shared Folder Sync Tasks4
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 
Central Management System
Chat
Maximum Users800
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
Recommended Number of Hosted Files500,000
Recommended Number of Concurrent Sync Clients1,000 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Notes
  • The 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
exFAT Access (optional)
Media Server
DLNA Compliance
Moments
Facial recognition
Surveillance Station
Maximum IP cam 30 (including 2 Free License) 
Total FPS (H.264)*900 FPS @ 720p (1280×720)
480 FPS @ 1080p (1920×1080)
300 FPS @ 3M (2048×1536)
250 FPS @ 5M (2591×1944)
Total FPS (MJPEG)*480 FPS @ 720p (1280×720)
300 FPS @ 1080p (1920×1080)
250 FPS @ 3M (2048×1536)
200 FPS @ 5M (2591×1944)
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.
Synology Drive
Recommended Number of Hosted Files500,000 (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 Sync Clients450 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Notes
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Exceeding the limits above may result in longer response time in file operations.
  • EXT4 file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
Maximum Users400
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
Video Station
Video TranscodingGroup 1 – Type 2 
Maximum Transcoding Channel Number1 channel, 30 FPS @ 720p (1280×720), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1
VPN Server
Maximum Connections20
Environment & Packaging
EnvironmentRoHS 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