Comparison results

Hardware Specifications
CPU
CPU Model Intel Celeron J3355 Intel Celeron J3455
CPU Architecture 64-bit 64-bit
CPU Frequency Dual Core 2.0 burst up to 2.5 GHz Quad Core 1.5 burst up to 2.3 GHz
Hardware Encryption Engine (AES-NI)
Hardware Transcoding Engine H.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30 H.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30
Memory
System Memory 2 GB DDR3L 2 GB DDR3L
Memory Module Pre-installed 2 GB (2 GB x 1) 2 GB (2 GB x 1)
Total Memory Slots 2 2
Memory Expandable up to 6 GB (2 GB + 4 GB) 6 GB (2 GB + 4 GB)
Notes
  • Synology 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.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
  • Synology 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.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
Storage
Drive Bays 2 2
Maximum Drive Bays with Expansion Unit 7
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 32 TB (16 TB drive x 2) (Capacity may vary by RAID types) 32 TB (16 TB drive x 2) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units 112 TB (32 TB + 16 TB drive x 5) (Capacity may vary by RAID types)
Maximum Single Volume Size* 108 TB 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.
  • The maximum single volume size is not directly related to the maximum raw capacity. (Learn more)
  • Expansion of the internal volume is only supported if the combined single volume size does not exceed the maximum limit of 108 TB.
  • "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 single volume size is not directly related to the maximum raw capacity. (Learn more)
  • Expansion of the internal volume is only supported if the combined single volume size does not exceed the maximum limit of 108 TB.
External Ports
RJ-45 1GbE LAN Port 1 2 (with Link Aggregation / Failover support)
USB 3.0 Port 3 3
eSATA Port 1 1
USB / SD Copy
File System
Internal Drives
  • Btrfs
  • EXT4
  • Btrfs
  • EXT4
External Drives
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
  • Btrfs
  • 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) 165 mm x 108 mm x 232.2 mm 157 mm x 103.5 mm x 232 mm
Weight 1.30 kg 1.74 kg
Others
System Fan 92 mm x 92 mm x 1 pcs 92 mm x 92 mm x 1 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Brightness Adjustable Front LED Indicators
Power Recovery
Noise Level* 19.3 dB(A) 18.4 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 60W 65W
AC Input Power Voltage 100 V to 240 V AC 100 V to 240 V AC
Power Frequency 50/60Hz, Single Phase 50/60Hz, Single Phase
Power Consumption* 17.23 W (Access)
5.4 W (HDD Hibernation)
20.1 W (Access)
9.1 W (HDD Hibernation)
British Thermal Unit 58.79 BTU/hr (Access)
18.43 BTU/hr (HDD Hibernation)
68.58 BTU/hr (Access)
31.05 BTU/hr (HDD Hibernation)
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
  • VCCI
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI
Warranty 2 Years 3-year hardware warranty, extendable to 5-year coverage - EW201
Notes
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • 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%
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • 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 64 64
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
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
RAID Migration Basic to RAID 1
  • Basic to RAID 1
  • Basic to RAID 5 (with Expansion Unit)
  • RAID 1 to RAID 5 (with Expansion Unit)
  • RAID 5 to RAID 6 (with Expansion Unit)
Volume Expansion with Larger HDDs
  • Synology Hybrid RAID
  • RAID 1
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
Volume Expansion by Adding a HDD Synology Hybrid RAID
  • Synology Hybrid RAID
  • JBOD (with Expansion Unit)
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
Global Hot Spare Supported RAID Type
  • Synology Hybrid RAID
  • RAID 1 (with Expansion Unit)
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
File Services
File Protocol CIFS/AFP/NFS/FTP/WebDAV CIFS/AFP/NFS/FTP/WebDAV
Maximum Concurrent CIFS/AFP/FTP Connections 500 500
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) 1,500 1,500
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Account & Shared Folder
Maximum Local User Accounts 2,048 2,048
Maximum Local Groups 256 256
Maximum Shared Folder 256 512
Maximum Shared Folder Sync Tasks 8 8
Synology High Availability
Log Center
Syslog Events per Second 400 800
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
Synology Chat
Maximum Users 1,000 1,500
Notes
  • The number of concurrent HTTP connections for Synology 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 Synology 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
Recommended Number of Hosted Files 1,000,000 1,000,000
Recommended Number of Concurrent Sync Clients 500 (the number of connections that can be maintained when the recommended number of hosted files was reached) 500 (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.
  • 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 80
Notes Download Station version requirement: 3.8.14 or later version Download Station version requirement: 3.8.14 or later version
exFAT Access (Optional)
Synology MailPlus / MailPlus Server
Free Email Accounts 5 (Licenses required for additional accounts) 5 (Licenses required for additional accounts)
Maximum Number of Concurrent Users 50 100
Maximum Server Performance 623,000 emails per day, approx. 19GB 1,052,000 emails per day, approx. 32GB
Notes
  • The CPU and RAM usage were both under 80% when testing the maximum number of concurrent users.
  • 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).
  • The CPU and RAM usage were both under 80% when testing the maximum number of concurrent users.
  • 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
Auto Color & Rotate
Moments Select
Snapshot Replication
Maximum Snapshots per Shared Folder 1,024 1,024
Maximum of System Snapshots 65,536 65,536
Surveillance Station
Maximum IP cam (Licenses required) 25 (including 2 Free License) (See All Supported IP Cameras) 40 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)* 750 FPS @ 720p (1280x720)
600 FPS @ 1080p (1920x1080)
350 FPS @ 3M (2048x1536)
250 FPS @ 5M (2591x1944)
120 FPS @ 4K (3840x2160)
1200 FPS @ 720p (1280x720)
800 FPS @ 1080p (1920x1080)
350 FPS @ 3M (2048x1536)
280 FPS @ 5M (2591x1944)
170 FPS @ 4K (3840x2160)
Total FPS (H.265)* 750 FPS @ 720p (1280x720)
750 FPS @ 1080p (1920x1080)
450 FPS @ 3M (2048x1536)
250 FPS @ 5M (2591x1944)
200 FPS @ 4K (3840x2160)
1200 FPS @ 720p (1280x720)
1200 FPS @ 1080p (1920x1080)
600 FPS @ 3M (2048x1536)
480 FPS @ 5M (2591x1944)
200 FPS @ 4K (3840x2160)
Total FPS (MJPEG)* 450 FPS @ 720p (1280x720)
250 FPS @ 1080p (1920x1080)
160 FPS @ 3M (2048x1536)
130 FPS @ 5M (2591x1944)
450 FPS @ 720p (1280x720)
250 FPS @ 1080p (1920x1080)
200 FPS @ 3M (2048x1536)
100 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. 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.
Synology Drive
Recommended Number of Hosted Files 500,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) 500,000 (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 Clients 450 (the number of connections that can be maintained when the recommended number of hosted files was reached) 450 (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.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
  • 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.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
Maximum Users 400 1,800
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.
  • 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 Transcoding 4K Group 1 (See more) 4K Group 1 (See more)
Maximum Transcoding Channel Number 2 channel, 30 FPS @ 4K (4096 x 2160), H.264 (AVC)/H.265 (HEVC) or
2 channel, 30 FPS @ 1080p (1920×1080), H.264 (AVC)/H.265 (HEVC)/MPEG-2/VC-1
2 channel, 30 FPS @ 4K (4096 x 2160), H.264 (AVC)/H.265 (HEVC) or
2 channel, 30 FPS @ 1080p (1920×1080), H.264 (AVC)/H.265 (HEVC)/MPEG-2/VC-1
Virtual Machine Manager
Recommended Virtual Machine Instances 2 (Learn more) 2 (Learn more)
Recommended Virtual DSM Number (Licenses required) 2 (including 1 Free License) 2 (including 1 Free License)
Notes
  • Virtual Machine Manager is not supported on hosts running Synology High Availability.
  • The specifications vary depending on system configuration and memory size.
  • Virtual Machine Manager is not supported on hosts running Synology High Availability.
  • The specifications vary depending on system configuration and memory size.
VPN Server
Maximum Connections 30 30
Environment & Packaging
Environment RoHS Compliant RoHS Compliant
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Adapter X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 1
  • Quick Installation Guide X 1
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Adapter X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 2
  • Quick Installation Guide X 1
Optional Accessories
  • Surveillance Device License Pack
  • D3NS1866L-4G DDR3 non-ECC SO-DIMM
  • VS360HD
  • VS960HD
  • Surveillance Device License Pack
  • D3NS1866L-4G DDR3 non-ECC SO-DIMM
  • Expansion Unit: DX517 X 1
  • VS360HD
  • VS960HD
Hardware Specifications
CPU
CPU Model
DS218+ Intel Celeron J3355
DS718+ Intel Celeron J3455
CPU Architecture
DS218+ 64-bit
DS718+ 64-bit
CPU Frequency
DS218+ Dual Core 2.0 burst up to 2.5 GHz
DS718+ Quad Core 1.5 burst up to 2.3 GHz
Hardware Encryption Engine (AES-NI)
DS218+
DS718+
Hardware Transcoding Engine
DS218+ H.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30
DS718+ H.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30
Memory
System Memory
DS218+ 2 GB DDR3L
DS718+ 2 GB DDR3L
Memory Module Pre-installed
DS218+ 2 GB (2 GB x 1)
DS718+ 2 GB (2 GB x 1)
Total Memory Slots
DS218+ 2
DS718+ 2
Memory Expandable up to
DS218+ 6 GB (2 GB + 4 GB)
DS718+ 6 GB (2 GB + 4 GB)
Notes
DS218+
  • Synology 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.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
DS718+
  • Synology 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.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
Storage
Drive Bays
DS218+ 2
DS718+ 2
Maximum Drive Bays with Expansion Unit
DS218+
DS718+ 7
Compatible Drive Type* (See all supported drives)
DS218+
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
DS718+
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Maximum Internal Raw Capacity
DS218+ 32 TB (16 TB drive x 2) (Capacity may vary by RAID types)
DS718+ 32 TB (16 TB drive x 2) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units
DS218+
DS718+ 112 TB (32 TB + 16 TB drive x 5) (Capacity may vary by RAID types)
Maximum Single Volume Size*
DS218+ 108 TB
DS718+ 108 TB
Hot Swappable Drive
DS218+
DS718+
Notes
DS218+
  • "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 single volume size is not directly related to the maximum raw capacity. (Learn more)
  • Expansion of the internal volume is only supported if the combined single volume size does not exceed the maximum limit of 108 TB.
DS718+
  • "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 single volume size is not directly related to the maximum raw capacity. (Learn more)
  • Expansion of the internal volume is only supported if the combined single volume size does not exceed the maximum limit of 108 TB.
External Ports
RJ-45 1GbE LAN Port
DS218+ 1
DS718+ 2 (with Link Aggregation / Failover support)
USB 3.0 Port
DS218+ 3
DS718+ 3
eSATA Port
DS218+ 1
DS718+ 1
USB / SD Copy
DS218+
DS718+
File System
Internal Drives
DS218+
  • Btrfs
  • EXT4
DS718+
  • Btrfs
  • EXT4
External Drives
DS218+
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
DS718+
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
Notes
DS218+ exFAT Access is purchased separately in Package Center.
DS718+ exFAT Access is purchased separately in Package Center.
Appearance
Size (Height x Width x Depth)
DS218+ 165 mm x 108 mm x 232.2 mm
DS718+ 157 mm x 103.5 mm x 232 mm
Weight
DS218+ 1.30 kg
DS718+ 1.74 kg
Others
System Fan
DS218+ 92 mm x 92 mm x 1 pcs
DS718+ 92 mm x 92 mm x 1 pcs
Fan Speed Mode
DS218+
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
DS718+
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Brightness Adjustable Front LED Indicators
DS218+
DS718+
Power Recovery
DS218+
DS718+
Noise Level*
DS218+ 19.3 dB(A)
DS718+ 18.4 dB(A)
Scheduled Power On / Off
DS218+
DS718+
Wake on LAN / WAN
DS218+
DS718+
Power Supply Unit / Adapter
DS218+ 60W
DS718+ 65W
AC Input Power Voltage
DS218+ 100 V to 240 V AC
DS718+ 100 V to 240 V AC
Power Frequency
DS218+ 50/60Hz, Single Phase
DS718+ 50/60Hz, Single Phase
Power Consumption*
DS218+ 17.23 W (Access)
5.4 W (HDD Hibernation)
DS718+ 20.1 W (Access)
9.1 W (HDD Hibernation)
British Thermal Unit
DS218+ 58.79 BTU/hr (Access)
18.43 BTU/hr (HDD Hibernation)
DS718+ 68.58 BTU/hr (Access)
31.05 BTU/hr (HDD Hibernation)
Temperature
Operating Temperature
DS218+ 5°C to 40°C (40°F to 104°F)
DS718+ 5°C to 40°C (40°F to 104°F)
Storage Temperature
DS218+ -20°C to 60°C (-5°F to 140°F)
DS718+ -20°C to 60°C (-5°F to 140°F)
Relative Humidity
DS218+ 5% to 95% RH
DS718+ 5% to 95% RH
Certification
DS218+
  • EAC
  • VCCI
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI
DS718+
  • EAC
  • VCCI
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI
Warranty
DS218+ 2 Years
DS718+ 3-year hardware warranty, extendable to 5-year coverage - EW201
Notes
DS218+
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • 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%
DS718+
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • 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
DS218+ 64
DS718+ 64
Maximum iSCSI Target Number
DS218+ 128
DS718+ 128
Maximum iSCSI LUN
DS218+ 256
DS718+ 256
iSCSI LUN Clone/Snapshot, Windows ODX
DS218+
DS718+
SSD Read / Write Cache (White Paper)
DS218+
DS718+
SSD TRIM
DS218+
DS718+
Supported RAID Type
DS218+
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
DS718+
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
RAID Migration
DS218+ Basic to RAID 1
DS718+
  • Basic to RAID 1
  • Basic to RAID 5 (with Expansion Unit)
  • RAID 1 to RAID 5 (with Expansion Unit)
  • RAID 5 to RAID 6 (with Expansion Unit)
Volume Expansion with Larger HDDs
DS218+
  • Synology Hybrid RAID
  • RAID 1
DS718+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
Volume Expansion by Adding a HDD
DS218+ Synology Hybrid RAID
DS718+
  • Synology Hybrid RAID
  • JBOD (with Expansion Unit)
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
Global Hot Spare Supported RAID Type
DS218+
DS718+
  • Synology Hybrid RAID
  • RAID 1 (with Expansion Unit)
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
File Services
File Protocol
DS218+ CIFS/AFP/NFS/FTP/WebDAV
DS718+ CIFS/AFP/NFS/FTP/WebDAV
Maximum Concurrent CIFS/AFP/FTP Connections
DS218+ 500
DS718+ 500
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion)
DS218+ 1,500
DS718+ 1,500
Windows Access Control List (ACL) Integration
DS218+
DS718+
NFS Kerberos Authentication
DS218+
DS718+
Account & Shared Folder
Maximum Local User Accounts
DS218+ 2,048
DS718+ 2,048
Maximum Local Groups
DS218+ 256
DS718+ 256
Maximum Shared Folder
DS218+ 256
DS718+ 512
Maximum Shared Folder Sync Tasks
DS218+ 8
DS718+ 8
Synology High Availability
DS218+
DS718+
Log Center
DS218+
DS718+
Syslog Events per Second
DS218+ 400
DS718+ 800
Virtualization
VMware vSphere 6 with VAAI
DS218+
DS718+
Windows Server 2012
DS218+
DS718+
Windows Server 2012 R2
DS218+
DS718+
Windows Server 2016
DS218+
DS718+
Citrix Ready
DS218+
DS718+
OpenStack
DS218+
DS718+
Antivirus by McAfee (Trial)
DS218+
DS718+
Central Management System
DS218+
DS718+
Synology Chat
DS218+
DS718+
Maximum Users
DS218+ 1,000
DS718+ 1,500
Notes
DS218+
  • The number of concurrent HTTP connections for Synology 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.
DS718+
  • The number of concurrent HTTP connections for Synology 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
DS218+
DS718+
Recommended Number of Hosted Files
DS218+ 1,000,000
DS718+ 1,000,000
Recommended Number of Concurrent Sync Clients
DS218+ 500 (the number of connections that can be maintained when the recommended number of hosted files was reached)
DS718+ 500 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Notes
DS218+
  • 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.
DS718+
  • 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
DS218+
DS718+
Download Station
DS218+
DS718+
Maximum Concurrent Download Tasks
DS218+ 80
DS718+ 80
Notes
DS218+ Download Station version requirement: 3.8.14 or later version
DS718+ Download Station version requirement: 3.8.14 or later version
exFAT Access (Optional)
DS218+
DS718+
Synology MailPlus / MailPlus Server
DS218+
DS718+
Free Email Accounts
Maximum Number of Concurrent Users
DS218+ 50
DS718+ 100
Maximum Server Performance
DS218+ 623,000 emails per day, approx. 19GB
DS718+ 1,052,000 emails per day, approx. 32GB
Notes
DS218+
  • The CPU and RAM usage were both under 80% when testing the maximum number of concurrent users.
  • 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).
DS718+
  • The CPU and RAM usage were both under 80% when testing the maximum number of concurrent users.
  • 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
DS218+
DS718+
DLNA Compliance
DS218+
DS718+
Moments
DS218+
DS718+
Facial Recognition
DS218+
DS718+
Subject Recognition
DS218+
DS718+
Auto Color & Rotate
DS218+
DS718+
Moments Select
DS218+
DS718+
Snapshot Replication
DS218+
DS718+
Maximum Snapshots per Shared Folder
DS218+ 1,024
DS718+ 1,024
Maximum of System Snapshots
DS218+ 65,536
DS718+ 65,536
Surveillance Station
DS218+
DS718+
Maximum IP cam (Licenses required)
DS218+ 25 (including 2 Free License) (See All Supported IP Cameras)
DS718+ 40 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)*
DS218+ 750 FPS @ 720p (1280x720)
600 FPS @ 1080p (1920x1080)
350 FPS @ 3M (2048x1536)
250 FPS @ 5M (2591x1944)
120 FPS @ 4K (3840x2160)
DS718+ 1200 FPS @ 720p (1280x720)
800 FPS @ 1080p (1920x1080)
350 FPS @ 3M (2048x1536)
280 FPS @ 5M (2591x1944)
170 FPS @ 4K (3840x2160)
Total FPS (H.265)*
DS218+ 750 FPS @ 720p (1280x720)
750 FPS @ 1080p (1920x1080)
450 FPS @ 3M (2048x1536)
250 FPS @ 5M (2591x1944)
200 FPS @ 4K (3840x2160)
DS718+ 1200 FPS @ 720p (1280x720)
1200 FPS @ 1080p (1920x1080)
600 FPS @ 3M (2048x1536)
480 FPS @ 5M (2591x1944)
200 FPS @ 4K (3840x2160)
Total FPS (MJPEG)*
DS218+ 450 FPS @ 720p (1280x720)
250 FPS @ 1080p (1920x1080)
160 FPS @ 3M (2048x1536)
130 FPS @ 5M (2591x1944)
DS718+ 450 FPS @ 720p (1280x720)
250 FPS @ 1080p (1920x1080)
200 FPS @ 3M (2048x1536)
100 FPS @ 5M (2591x1944)
Notes
DS218+ 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.
DS718+ 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.
Synology Drive
DS218+
DS718+
Recommended Number of Hosted Files
DS218+ 500,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
DS718+ 500,000 (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 Clients
DS218+ 450 (the number of connections that can be maintained when the recommended number of hosted files was reached)
DS718+ 450 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Notes
DS218+
  • 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.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
DS718+
  • 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.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
DS218+
DS718+
Maximum Users
DS218+ 400
DS718+ 1,800
Notes
DS218+
  • 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
DS718+
  • 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
DS218+
DS718+
Video Transcoding
DS218+ 4K Group 1 (See more)
DS718+ 4K Group 1 (See more)
Maximum Transcoding Channel Number
DS218+ 2 channel, 30 FPS @ 4K (4096 x 2160), H.264 (AVC)/H.265 (HEVC) or
2 channel, 30 FPS @ 1080p (1920×1080), H.264 (AVC)/H.265 (HEVC)/MPEG-2/VC-1
DS718+ 2 channel, 30 FPS @ 4K (4096 x 2160), H.264 (AVC)/H.265 (HEVC) or
2 channel, 30 FPS @ 1080p (1920×1080), H.264 (AVC)/H.265 (HEVC)/MPEG-2/VC-1
Virtual Machine Manager
DS218+
DS718+
Recommended Virtual Machine Instances
DS218+ 2 (Learn more)
DS718+ 2 (Learn more)
Recommended Virtual DSM Number (Licenses required)
DS218+ 2 (including 1 Free License)
DS718+ 2 (including 1 Free License)
Notes
DS218+
  • Virtual Machine Manager is not supported on hosts running Synology High Availability.
  • The specifications vary depending on system configuration and memory size.
DS718+
  • Virtual Machine Manager is not supported on hosts running Synology High Availability.
  • The specifications vary depending on system configuration and memory size.
VPN Server
DS218+
DS718+
Maximum Connections
DS218+ 30
DS718+ 30
Environment & Packaging
Environment
DS218+ RoHS Compliant
DS718+ RoHS Compliant
Packaging Content
DS218+
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Adapter X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 1
  • Quick Installation Guide X 1
DS718+
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Adapter X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 2
  • Quick Installation Guide X 1
Optional Accessories
DS218+
  • Surveillance Device License Pack
  • D3NS1866L-4G DDR3 non-ECC SO-DIMM
  • VS360HD
  • VS960HD
DS718+
  • Surveillance Device License Pack
  • D3NS1866L-4G DDR3 non-ECC SO-DIMM
  • Expansion Unit: DX517 X 1
  • VS360HD
  • VS960HD