DS1517+

DiskStation DS1517+

High performance NAS optimized for encryption and intensive tasks

Centralized storage solution with outstanding performance

Synology DiskStation DS1517+ is a 5-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
1,165 MB/s sequential reading

Scalability
Up to 15 drives with two DX517 expansion units1

Supercharge your storage with speedy performance

Equipped with dual-channel memory and a PCIe slot, DS1517+ supports installing the dual M.2 SSD adapter card, M2D17, or the 10GbE NIC, for high-IOPS system cache and ultra-fast data transmission respectively.

M2D17

Dual M.2 SATA SSD slot, compatible with 2280/2260/2242 form factors

10GbE

10GbE network capacity for bandwidth intensive environments

RAM

Dual-channel memory that boosts the performance by 20%

Engineered for reliability, backed by Synology

DS1517+ 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.

Next-generation file system for better data protection

The Btrfs file system introduces advanced storage technologies and optimized snapshots to prevent data corruption and reduce maintenance overhead. While ensuring high-level data integrity, it also offers flexible, efficient data protection and recovery tools.

Flexible Shared Folder / User Quota System provides comprehensive quota control on user accounts and shared folders

Snapshot Replication provides schedulable and storage capacity-saving data protection with 1,024 shared folder backups and 65,000 system-wide snapshots

 
File- or folder-level data restoration accelerates data recovery, providing more flexibility for businesses

 
Automatic file self-healing detects and recovers corrupted files without user intervention

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.

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.

Hyper Backup

Store multiple backup versions with block-level incremental data backup and cross-version deduplication.

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.

All-in-one server

Save additional investment by integrating various network services, web/mail services, management applications into your NAS.

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 5
Maximum Drive Bays with Expansion Unit 15
Compatible Drive Type* (See all supported drives) 3.5″ SATA HDD
  2.5″ SATA HDD
  2.5″ SATA SSD
   
Maximum Internal Raw Capacity 60 TB (12 TB drive x 5) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units 180 TB (60 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
  PCIe Network Interface Card (Learn more)
   
Notes DS1517+ 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 250 mm x 243 mm
Weight 4.46 kg
Others  
System Fan 80 mm x 80 mm x 2 pcs
Fan Speed Mode Cool Mode
  Quiet Mode
   
Easy Replacement System Fan  
Brightness adjustable front LED indicators  
Power Recovery  
Noise Level* 26.2 dB(A)
Scheduled Power On/Off  
Wake on LAN/WAN  
Power Supply Unit / Adapter 200W
AC Input Power Voltage 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 42.1 W (Access)
  23.1 W (HDD Hibernation)
British Thermal Unit 143.7 BTU/hr (Access)
  78.9 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, 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 512
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 512
Maximum Shared Folder Sync Tasks 8
Maximum Concurrent CIFS/AFP/FTP Connections 512(2GB) / 2048(8GB)
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 (learn more about the complete add-on package list)  
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 512 (2GB) / 2000 (8GB)
Maximum Number of Concurrently Connected Devices (with RAM expansion) 2000
Maximum Number of Synced Files (btrfs) 1,000,000 / single file reaction time 846 (2GB) / 907 (8GB) ms
Maximum Number of Synced Files (ext4) 1,000,000 / single file reaction time 566 (2GB) / 517 (8GB) 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.
   
Document Viewer  
Download Station  
Maximum Concurrent Download Tasks 80
Drive  
Maximum Number of Synced Files 1,000,000 / single file reaction time 437 ms
Maximum Number of Concurrent Connections for PC Clients 550
Notes The Btrfs 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)  
MailPlus / MailPlus Server  
Free Email Accounts 5 (Licenses required for additional accounts)
Recommended MailPlus Client Number Up to 90(btrfs)/100(ext4)
Maximum Server Performance 712,000 emails per day, approx. 21.73GB
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 (Licenses required) 40 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)* 1200 (2GB RAM) / 1200 (8GB RAM) FPS @ 720p (1280×720)
  900 (2GB RAM) / 1080 (8GB RAM) FPS @ 1080p (1920×1080)
  320 (2GB RAM) / 480 (8GB RAM) FPS @ 3M (2048×1536)
  270 (2GB RAM) / 280 (8GB RAM) FPS @ 5M (2591×1944)
  120 (2GB RAM) / 160 (8GB RAM) FPS @ 4K (3840×2160)
Total FPS (H.265)* 1200 (2GB RAM) / 1200 (8GB RAM) FPS @ 720p (1280×720)
  1200 (2GB RAM) / 1200 (8GB RAM) FPS @ 1080p (1920×1080)
  560 (2GB RAM) / 1120 (8GB RAM) FPS @ 3M (2048×1536)
  300 (2GB RAM) / 760 (8GB RAM) FPS @ 5M (2591×1944)
  200 (2GB RAM) / 480 (8GB RAM) FPS @ 4K (3840×2160)
Total FPS (MJPEG)* 540 (2GB RAM) / 760 (8GB RAM) FPS @ 720p (1280×720)
  200 (2GB RAM) / 400 (8GB RAM) FPS @ 1080p (1920×1080)
  150 (2GB RAM) / 280 (8GB RAM) FPS @ 3M (2048×1536)
  90 (2GB RAM) / 200 (8GB RAM) 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.
Video Station  
Video Transcoding Group 1 – Type 1 (See more)
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) (Learn more)
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