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Comparison results

Hardware Specifications
CPU
CPU Model Intel Atom C2538 Annapurna Labs Alpine AL-314
CPU Architecture 64-bit 32-bit
CPU Frequency Quad Core 2.4 GHz Quad Core 1.7 GHz
Hardware Encryption Engine
Hardware Encryption Engine (AES-NI)
Memory
System Memory 2/8 GB DDR3 2 GB DDR3L
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 5
Maximum Drive Bays with Expansion Unit 15 15
Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Maximum Internal Raw Capacity 70 TB (14 TB drive x 5) (Capacity may vary by RAID types) 70 TB (14 TB drive x 5) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units 210 TB (70 TB + 14 TB drive x 10) (Capacity may vary by RAID types) 210 TB (70 TB + 14 TB drive x 10) (Capacity may vary by RAID types)
Maximum Single Volume Size
  • 108 TB
  • 108 TB
Hot Swappable Drive
External Ports
RJ-45 1GbE LAN Port 4 (with Link Aggregation / Failover support) 4 (with Link Aggregation / Failover support)
USB 3.0 Port 4 2
eSATA Port 2 2
PCIe
PCIe Expansion
  • 1 x Gen2 x8 slot (x4 link)
Add-in-card support
  • M2D17 - Dual M.2 SATA SSD adapter card for SSD cache
  • M2D18 - Dual M.2 SATA/NVMe 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
  • EXT4
External Drives
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
Notes
  • exFAT Access is purchased separately in Package Center.
  • exFAT Access is purchased separately in Package Center.
Appearance
Size (Height x Width x Depth) 166 mm x 250 mm x 243 mm
157 mm x 248 mm x 233 mm
Weight 4.46 kg
4.15 kg
Others
System Fan 80 mm x 80 mm x 2 pcs 80 mm x 80 mm x 2 pcs
Fan Speed Mode
  • Cool Mode
  • Quiet Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
Brightness adjustable front LED indicators
Power Recovery
Noise Level* 26.2 dB(A)
22.4 dB(A)
Scheduled Power On/Off
Wake on LAN/WAN
Power Supply Unit / Adapter 200W
200W
AC Input Power Voltage 100V to 240V AC 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase 50/60 Hz, Single Phase
Power Consumption* 42.1 W (Access)
23.1 W (HDD Hibernation)
39.5 W (Access)
18.2 W (HDD Hibernation)
British Thermal Unit 143.7 BTU/hr (Access)
78.9 BTU/hr (HDD Hibernation)
134.78 BTU/hr (Access)
62.10 BTU/hr (HDD Hibernation)
Environment Temperature
Operating Temperature 5°C to 40°C (40°F to 104°F) 5°C to 40°C (40°F to 104°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F) -20°C to 60°C (-5°F to 140°F)
Relative Humidity 5% to 95% RH 5% to 95% RH
Certification
  • EAC
  • VCCI
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI
  • EAC
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI
Warranty 3 Year Hardware Warranty 3 Year Hardware Warranty
DSM Specifications
Storage Management
Maximum Internal Volume Number 512 256
Maximum iSCSI Target Number 128 128
Maximum iSCSI LUN 256 256
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
  • 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
  • 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
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
Volume Expansion by Adding a HDD
  • Synology Hybrid RAID
  • RAID 5
  • RAID 6
  • JBOD
  • 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
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
File Sharing Capacity
Maximum Local User Accounts 2048 2048
Maximum Local Groups 256 256
Maximum Shared Folder 512 256
Maximum Shared Folder Sync Tasks 8 4
Maximum Concurrent CIFS/AFP/FTP Connections 500(2GB) / 2000(8GB) 500
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 800 400
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)
Antivirus by McAfee (Trial)
Central Management System
Chat
Maximum Users 1500 800
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.
  • 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 500 (2GB) / 2000 (8GB) 500
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) 1,000,000 500,000
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.
  • 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.
Document Viewer
Download Station
Maximum Concurrent Download Tasks 80 50
Drive
Maximum Number of Hosted Files 1,000,000 500,000
Maximum Number of Concurrent Connections for PC Clients 550 450
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.
  • The EXT4 file system was used for the purpose of testing.
exFAT Access (optional)
MailPlus / MailPlus Server
Free Email Accounts 5 (Licenses required for additional accounts)
Maximum number of concurrent users Up to 100
Maximum Server Performance 897,000 emails per day, approx. 27GB
Media Server
DLNA Compliance
Moments
Facial recognition
Subject recognition
Office
Maximum Users 1800 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
  • 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.
  • 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 of system snapshots 65536
Surveillance Station
Maximum IP cam (Licenses required) 40 (including 2 Free License) (See All Supported IP Cameras) 30 (including 2 Free License) (See All Supported IP Cameras)
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)
900 FPS @ 720p (1280x720)
300 FPS @ 1080p (1920×1080)
200 FPS @ 3M (2048x1536)
150 FPS @ 5M (2591x1944)
50 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)
900 FPS @ 720p (1280x720)
900 FPS @ 1080p (1920×1080)
660 FPS @ 3M (2048x1536)
330 FPS @ 5M (2591x1944)
150 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)
250 FPS @ 720p (1280x720)
120 FPS @ 1080p (1920×1080)
100 FPS @ 3M (2048x1536)
80 FPS @ 5M (2591x1944)
Video Station
Video Transcoding Group 1 - Type 1 (See more) Group 1 - Type 2 (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
  • 1 channel, 30 FPS @ 720p (1280x720), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1
Virtual Machine Manager
Recommended Virtual Machine Instances 4 (Learn more)
Recommended Virtual DSM Number (Licenses required) 4 (including 1 Free License)
VPN Server
Maximum Connections 20 15
Environment & Packaging
Environment RoHS Compliant 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
  • 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
  • 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 E10G18-T1
  • Synology Ethernet Adapter E10G18-T2
  • Synology Ethernet Adapter E10G17-F2
  • Synology M2D18 M.2 SSD adapter card
  • Surveillance Device License Pack
  • Expansion Unit: DX517 X 2
  • VS360HD
  • VS960HD
Hardware Specifications
CPU
CPU Model
DS1517+ Intel Atom C2538
DS1517 Annapurna Labs Alpine AL-314
CPU Architecture
DS1517+ 64-bit
DS1517 32-bit
CPU Frequency
DS1517+ Quad Core 2.4 GHz
DS1517 Quad Core 1.7 GHz
Hardware Encryption Engine
DS1517+
DS1517
Hardware Encryption Engine (AES-NI)
DS1517+
DS1517
Memory
System Memory
DS1517+ 2/8 GB DDR3
DS1517 2 GB DDR3L
Memory Module Pre-installed
DS1517+ 2GB (1 x 2GB) / 8GB (2 x 4GB)
DS1517
Total Memory Slots
DS1517+ 2
DS1517
Memory Expandable up to
DS1517+ 16 GB (8 GB x 2)
DS1517
Storage
Drive Bays
DS1517+ 5
DS1517 5
Maximum Drive Bays with Expansion Unit
DS1517+ 15
DS1517 15
Compatible Drive Type* (See all supported drives)
DS1517+
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
DS1517
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Maximum Internal Raw Capacity
DS1517+ 70 TB (14 TB drive x 5) (Capacity may vary by RAID types)
DS1517 70 TB (14 TB drive x 5) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units
DS1517+ 210 TB (70 TB + 14 TB drive x 10) (Capacity may vary by RAID types)
DS1517 210 TB (70 TB + 14 TB drive x 10) (Capacity may vary by RAID types)
Maximum Single Volume Size
DS1517+
  • 108 TB
DS1517
  • 108 TB
Hot Swappable Drive
DS1517+
DS1517
External Ports
RJ-45 1GbE LAN Port
DS1517+ 4 (with Link Aggregation / Failover support)
DS1517 4 (with Link Aggregation / Failover support)
USB 3.0 Port
DS1517+ 4
DS1517 2
eSATA Port
DS1517+ 2
DS1517 2
PCIe
PCIe Expansion
DS1517+
  • 1 x Gen2 x8 slot (x4 link)
DS1517
Add-in-card support
DS1517+
  • M2D17 - Dual M.2 SATA SSD adapter card for SSD cache
  • M2D18 - Dual M.2 SATA/NVMe SSD adapter card for SSD cache
  • PCIe Network Interface Card (Learn more)
DS1517
Notes
DS1517+ DS1517+ with M2D17 can only support M.2 SATA SSD. M.2 NVMe/AHCI PCIe SSD is not supported.
DS1517
File System
Internal Drives
DS1517+
  • Btrfs
  • EXT4
DS1517
  • EXT4
External Drives
DS1517+
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
DS1517
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
Notes
DS1517+
  • exFAT Access is purchased separately in Package Center.
DS1517
  • exFAT Access is purchased separately in Package Center.
Appearance
Size (Height x Width x Depth)
DS1517+ 166 mm x 250 mm x 243 mm
DS1517 157 mm x 248 mm x 233 mm
Weight
DS1517+ 4.46 kg
DS1517 4.15 kg
Others
System Fan
DS1517+ 80 mm x 80 mm x 2 pcs
DS1517 80 mm x 80 mm x 2 pcs
Fan Speed Mode
DS1517+
  • Cool Mode
  • Quiet Mode
DS1517
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
DS1517+
DS1517
Brightness adjustable front LED indicators
DS1517+
DS1517
Power Recovery
DS1517+
DS1517
Noise Level*
DS1517+ 26.2 dB(A)
DS1517 22.4 dB(A)
Scheduled Power On/Off
DS1517+
DS1517
Wake on LAN/WAN
DS1517+
DS1517
Power Supply Unit / Adapter
DS1517+ 200W
DS1517 200W
AC Input Power Voltage
DS1517+ 100V to 240V AC
DS1517 100V to 240V AC
Power Frequency
DS1517+ 50/60 Hz, Single Phase
DS1517 50/60 Hz, Single Phase
Power Consumption*
DS1517+ 42.1 W (Access)
23.1 W (HDD Hibernation)
DS1517 39.5 W (Access)
18.2 W (HDD Hibernation)
British Thermal Unit
DS1517+ 143.7 BTU/hr (Access)
78.9 BTU/hr (HDD Hibernation)
DS1517 134.78 BTU/hr (Access)
62.10 BTU/hr (HDD Hibernation)
Environment Temperature
Operating Temperature
DS1517+ 5°C to 40°C (40°F to 104°F)
DS1517 5°C to 40°C (40°F to 104°F)
Storage Temperature
DS1517+ -20°C to 60°C (-5°F to 140°F)
DS1517 -20°C to 60°C (-5°F to 140°F)
Relative Humidity
DS1517+ 5% to 95% RH
DS1517 5% to 95% RH
Certification
DS1517+
  • EAC
  • VCCI
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI
DS1517
  • EAC
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI
Warranty
DS1517+ 3 Year Hardware Warranty
DS1517 3 Year Hardware Warranty
DSM Specifications
Storage Management
Maximum Internal Volume Number
DS1517+ 512
DS1517 256
Maximum iSCSI Target Number
DS1517+ 128
DS1517 128
Maximum iSCSI LUN
DS1517+ 256
DS1517 256
iSCSI LUN Clone/Snapshot, Windows ODX
DS1517+
DS1517
SSD Read/Write Cache (White Paper)
DS1517+
DS1517
SSD TRIM
DS1517+
DS1517
Supported RAID Type
DS1517+
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
DS1517
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RAID Migration
DS1517+
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
DS1517
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
Volume Expansion with Larger HDDs
DS1517+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
DS1517
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
Volume Expansion by Adding a HDD
DS1517+
  • Synology Hybrid RAID
  • RAID 5
  • RAID 6
  • JBOD
DS1517
  • Synology Hybrid RAID
  • RAID 5
  • RAID 6
  • JBOD
Global Hot Spare Supported RAID Type
DS1517+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
DS1517
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
File Sharing Capacity
Maximum Local User Accounts
DS1517+ 2048
DS1517 2048
Maximum Local Groups
DS1517+ 256
DS1517 256
Maximum Shared Folder
DS1517+ 512
DS1517 256
Maximum Shared Folder Sync Tasks
DS1517+ 8
DS1517 4
Maximum Concurrent CIFS/AFP/FTP Connections
DS1517+ 500(2GB) / 2000(8GB)
DS1517 500
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion)
DS1517+ 2000
DS1517
Windows Access Control List (ACL) Integration
DS1517+
DS1517
NFS Kerberos Authentication
DS1517+
DS1517
High Availability Manager
DS1517+
DS1517
Log Center
DS1517+
DS1517
Syslog Events per Second
DS1517+ 800
DS1517 400
Virtualization
VMware vSphere 6 with VAAI
DS1517+
DS1517
Windows Server 2012
DS1517+
DS1517
Windows Server 2012 R2
DS1517+
DS1517
Windows Server 2016
DS1517+
DS1517
Citrix Ready
DS1517+
DS1517
OpenStack
DS1517+
DS1517
Antivirus by McAfee (Trial)
DS1517+
DS1517
Central Management System
DS1517+
DS1517
Chat
DS1517+
DS1517
Maximum Users
DS1517+ 1500
DS1517 800
Notes
DS1517+
  • 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.
DS1517
  • 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
DS1517+
DS1517
Maximum Number of Concurrently Connected Devices
DS1517+ 500 (2GB) / 2000 (8GB)
DS1517 500
Maximum Number of Concurrently Connected Devices (with RAM expansion)
DS1517+ 2000
DS1517
Maximum Number of Hosted Files (btrfs)
DS1517+ 1,000,000
DS1517
Maximum Number of Hosted Files (ext4)
DS1517+ 1,000,000
DS1517 500,000
Notes
DS1517+
  • 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.
DS1517
  • 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.
Document Viewer
DS1517+
DS1517
Download Station
DS1517+
DS1517
Maximum Concurrent Download Tasks
DS1517+ 80
DS1517 50
Drive
DS1517+
DS1517
Maximum Number of Hosted Files
DS1517+ 1,000,000
DS1517 500,000
Maximum Number of Concurrent Connections for PC Clients
DS1517+ 550
DS1517 450
Notes
DS1517+
  • The Btrfs file system was used for the purpose of testing.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
DS1517
  • The EXT4 file system was used for the purpose of testing.
exFAT Access (optional)
DS1517+
DS1517
MailPlus / MailPlus Server
DS1517+
DS1517
Free Email Accounts
Maximum number of concurrent users
DS1517+ Up to 100
DS1517
Maximum Server Performance
DS1517+ 897,000 emails per day, approx. 27GB
DS1517
Media Server
DS1517+
DS1517
DLNA Compliance
DS1517+
DS1517
Moments
DS1517+
DS1517
Facial recognition
DS1517+
DS1517
Subject recognition
DS1517+
DS1517
Office
DS1517+
DS1517
Maximum Users
DS1517+ 1800
DS1517 400
Notes
DS1517+
  • 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
DS1517
  • 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.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
Snapshot Replication
DS1517+
DS1517
Maximum Snapshots per Shared Folder
DS1517+ 1024
DS1517
Maximum of system snapshots
DS1517+ 65536
DS1517
Surveillance Station
DS1517+
DS1517
Maximum IP cam (Licenses required)
DS1517+ 40 (including 2 Free License) (See All Supported IP Cameras)
DS1517 30 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)*
DS1517+ 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)
DS1517 900 FPS @ 720p (1280x720)
300 FPS @ 1080p (1920×1080)
200 FPS @ 3M (2048x1536)
150 FPS @ 5M (2591x1944)
50 FPS @ 4K (3840x2160)
Total FPS (H.265)*
DS1517+ 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)
DS1517 900 FPS @ 720p (1280x720)
900 FPS @ 1080p (1920×1080)
660 FPS @ 3M (2048x1536)
330 FPS @ 5M (2591x1944)
150 FPS @ 4K (3840x2160)
Total FPS (MJPEG)*
DS1517+ 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)
DS1517 250 FPS @ 720p (1280x720)
120 FPS @ 1080p (1920×1080)
100 FPS @ 3M (2048x1536)
80 FPS @ 5M (2591x1944)
Video Station
DS1517+
DS1517
Video Transcoding
DS1517+ Group 1 - Type 1 (See more)
DS1517 Group 1 - Type 2 (See more)
Maximum Transcoding Channel Number
DS1517+
  • 1 channel, 30 FPS @ 1080p(1920×1080), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1
DS1517
  • 1 channel, 30 FPS @ 720p (1280x720), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1
Virtual Machine Manager
DS1517+
DS1517
Recommended Virtual Machine Instances
DS1517+ 4 (Learn more)
DS1517
Recommended Virtual DSM Number (Licenses required)
DS1517+ 4 (including 1 Free License)
DS1517
VPN Server
DS1517+
DS1517
Maximum Connections
DS1517+ 20
DS1517 15
Environment & Packaging
Environment
DS1517+ RoHS Compliant
DS1517 RoHS Compliant
Packaging Content
DS1517+
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 2
  • Quick Installation Guide X 1
DS1517
  • 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
DS1517+
  • 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 E10G18-T1
  • Synology Ethernet Adapter E10G18-T2
  • Synology Ethernet Adapter E10G17-F2
  • Synology M2D18 M.2 SSD adapter card
DS1517
  • Surveillance Device License Pack
  • Expansion Unit: DX517 X 2
  • VS360HD
  • VS960HD