DiskStation DS1817+

Synology DiskStation DS1817+ is a 8-bay NAS powered by a quad-core CPU with AES-NI hardware encryption engine. Coming with quad 1GbE LAN ports, it can be installed with a 10GbE network interface card (NIC) or a dual M.2 SSD adapter card, thereby enhancing network speeds or boosting performance with SSD cache.

CPU

Quad-core 2.4GHz

Memory

2GB/8GB DDR3, up to 16GB (dual channel)

High Performance

1,179 MB/s sequential reading

Scalability

Up to 18 drives with two DX517 expansion units1

Category:
  1. Status indicator
  2. Alert indicator
  3. Drive status indicator
  4. Drive tray lock
  5. Power button and indicator
  6. LAN indicator
  7. USB 3.0 port
  8. Fan
  9. Power port
  10. Kensington Security Slot
  11. 1GbE RJ-45 port
  12. eSATA port
  13. PCIe 2.0 slot
  14. Reset button
  15. USB 3.0 port

 

Hardware Specifications
CPU
CPU Model Intel Atom C2538
CPU Architecture 64-bit
CPU Frequency Quad Core 2.4 GHz
Hardware Encryption Engine (AES-NI)
Memory
System Memory 2/8 GB DDR3
Memory Module Pre-installed 2GB (1 x 2GB) / 8GB (2 x 4GB)
Total Memory Slots 2
Memory Expandable up to 16 GB (8 GB x 2)
Storage
Drive Bays 8
Maximum Drive Bays with Expansion Unit 18
Compatible Drive Type*
  • 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
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.
  • 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 Port 4 (with Link Aggregation / Failover support)
USB 3.0 Port 4
eSATA Port 2
PCIe
PCIe Expansion 1 x Gen2 x8 slot (x4 link)
Add-in-card support
  • M2D17 - Dual M.2 SSD adapter card for SSD cache
  • M2D18 - Dual M.2 SATA/NVMe SSD adapter card for SSD cache
  • PCIe Network Interface Card
Notes DS1817+ with M2D17 can only support M.2 SATA SSD. M.2 NVMe/AHCI PCIe SSD is not supported.
File System
Internal Drives
  • Btrfs
  • EXT4
External Drives
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
Notes exFAT Access is purchased separately in Package Center.
Appearance
Size (Height x Width x Depth) 166 mm x 343 mm x 243 mm
Weight 6.0 kg
Others
System Fan 120 mm x 120 mm x 2 pcs
Fan Speed Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
Brightness adjustable front LED indicators
Power Recovery
Noise Level* 22.2 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* 61.5 W (Access)
31.6 W (HDD Hibernation)
British Thermal Unit 156.55 BTU/hr (Access)
86.09 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
  • VCCI
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI
Warranty 3 Year Hardware Warranty
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
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
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 512
Maximum Shared Folder Sync Tasks 8
Maximum Concurrent CIFS/AFP/FTP Connections 500(2GB) / 2000(8GB)
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) 2000
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
High Availability Manager
Log Center
Syslog Events per Second 800
Virtualization
VMware vSphere 6 with VAAI
Windows Server 2012
Windows Server 2012 R2
Citrix Ready
OpenStack
Add-on Packages
Antivirus by McAfee (Trial)
Central Management System
Chat
Maximum Users 1500
Notes
  • The number of concurrent HTTP connections for Chat was configured to the maximum.
  • 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.
Cloud Station Server
Maximum Number of Concurrently Connected Devices 500 (2GB) / 2000 (8GB)
Maximum Number of Concurrently Connected Devices (with RAM expansion) 2000
Maximum Number of Hosted Files (btrfs) 1,000,000
Maximum Number of Hosted Files (ext4) 1,000,000
Document Viewer
Download Station
Maximum Concurrent Download Tasks 80
Drive
Maximum Number of Hosted Files 1,000,000
Maximum Number of Concurrent Connections for PC Clients 550
Notes
  • The Btrfs 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)
MailPlus / MailPlus Server
Free Email Accounts 5
Recommended MailPlus Client Number Up to 90(btrfs)/100(ext4)
Maximum Server Performance 825,000 emails per day, approx. 25.18 GB
Notes
  • The CPU and RAM usages were both under 80% when testing recommended client numbers.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Read-write SSD cache was enabled in 5-bay (and above) NAS models with 2 SSDs units installed.
  • The performance of the mail system will slightly decrease in high-availability mode due to data synchronization between the two servers.
  • Functions that were enabled in all of the tests above: anti-spam, anti-virus, DNSBL, greylist, content scan, full-text search (English only).
Media Server
DLNA Compliance
Moments
Facial recognition
Subject recognition
Office
Maximum Users 1800
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
Snapshot Replication
Maximum Snapshots per Shared Folder 1024
Maximum Snapshots of all Shared Folder 65536
Surveillance Station
Maximum IP cam 40 (including 2 Free License)
Total FPS (H.264)* 1200 (2GB RAM) / 1200 (8GB RAM) FPS @ 720p (1280x720)
900 (2GB RAM) / 1080 (8GB RAM) FPS @ 1080p (1920×1080)
320 (2GB RAM) / 480 (8GB RAM) FPS @ 3M (2048x1536)
270 (2GB RAM) / 280 (8GB RAM) FPS @ 5M (2591x1944)
120 (2GB RAM) / 160 (8GB RAM) FPS @ 4K (3840x2160)
Total FPS (H.265)* 1200 (2GB RAM) / 1200 (8GB RAM) FPS @ 720p (1280x720)
1200 (2GB RAM) / 1200 (8GB RAM) FPS @ 1080p (1920×1080)
560 (2GB RAM) / 1120 (8GB RAM) FPS @ 3M (2048x1536)
300 (2GB RAM) / 760 (8GB RAM) FPS @ 5M (2591x1944)
200 (2GB RAM) / 480 (8GB RAM) FPS @ 4K (3840x2160)
Total FPS (MJPEG)* 540 (2GB RAM) / 760 (8GB RAM) FPS @ 720p (1280x720)
200 (2GB RAM) / 400 (8GB RAM) FPS @ 1080p (1920×1080)
150 (2GB RAM) / 280 (8GB RAM) FPS @ 3M (2048x1536)
90 (2GB RAM) / 200 (8GB RAM) 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 1
Maximum Transcoding Channel Number 1 channel, 30 FPS @ 1080p(1920×1080), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1
Virtual Machine Manager
Maximum Virtual DSM Number (Licenses required) 4 (including 1 Free License)
Notes Virtual Machine Manager is not supported on hosts running Synology High Availability.
VPN Server
Maximum Connections 20
Environment & Packaging
Environment RoHS Compliant
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 2
  • Quick Installation Guide X 1
Optional Accessories
  • Surveillance Device License Pack
  • RAM1600DDR3L-4GBx2 DDR3 non-ECC SO-DIMM kit
  • RAM1600DDR3L-8GBx2 DDR3 non-ECC SO-DIMM kit
  • Expansion Unit: DX517 X 2
  • VS360HD
  • VS960HD
  • Synology Ethernet Adapter E10G15-F1
  • Synology Ethernet Adapter E10G17-F2
  • Synology M2D18 M.2 SSD adapter card
  • Synology M2D17 M.2 SSD adapter card
General
Networking Protocols
  • CIFS
  • AFP
  • NFS
  • FTP
  • WebDAV
  • CalDAV
  • iSCSI
  • Telnet
  • SSH
  • SNMP
  • VPN (PPTP, OpenVPN, L2TP)
Windows AD Domain Integration Domain users login via SMB/NFS/AFP/FTP/File Station, LDAP integration
HDD Management
  • HDD Hibernation
  • S.M.A.R.T.
  • Dynamic Bad Sector Mapping
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