Hardware Specifications

CPU



CPU


CPU Model Intel Xeon D-1567 
CPU Architecture 64-bit 
CPU Frequency 12-core 2.1 (base) / 2.7 (turbo) GHz 
Hardware Encryption Engine (AES-NI)  

Memory



Memory


System Memory 16 GB DDR4 ECC RDIMM 
Memory Module Pre-installed 16 GB (16 GB x 1) 
Total Memory Slots 4 
Maximum Memory Capacity 128 GB (32 GB x 4) 
Notes 
  • For more information on memory upgrade limitations, visit here.
  • 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.
  • For more information on the recommended memory configurations, visit here.
  • 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.


Storage



Storage


Drive Bays 12 
Maximum Drive Bays with Expansion Unit 96 (RX1217sas x 7) / 180 (RX2417sas x 7) 
Compatible Drive Type* (See all supported drives) 
  • 3.5" SAS HDD
  • 2.5" SAS HDD
  • 2.5" SAS SSD
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD

Maximum Single Volume Size* 
  • 200 TB (32 GB RAM required, for RAID 5 or RAID 6 groups only)
  • 108 TB

Hot Swappable Drive  
Notes 
  • Storage Pool and volume creation require all drives to be listed as compatible on the device model's compatibility list.
  • "Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
  • Each internal volume (may consist of multiple drives) is expandable up to 108 TB (with memory less than 32 GB) or 200 TB (with memory equal to or greater than 32 GB).


External Ports



External Ports


RJ-45 1GbE LAN Port 4 (with Link Aggregation / Failover support) 
RJ-45 10GbE LAN Port 2 (with Link Aggregation / Failover support) 
USB 3.2 Gen 1 Port* 2 
Expansion Port 1 
Notes The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019. 

PCIe



PCIe


PCIe Expansion 2 x Gen3 x8 slots (x8 link) 

File System



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



Appearance


Form Factor (RU) 2U 
Size (Height x Width x Depth) 88 mm x 482 mm x 724 mm 
Weight 14.5 kg 
Rack Installation Support* 4-post 19" rack (Synology Rail Kit - RKS1317) 
Notes The rail kit is sold separately 

Others



Others


System Fan 80 mm x 80 mm x 4 pcs 
Fan Speed Mode 
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode

Easy Replacement System Fan  
Power Recovery  
Noise Level* 49.8 dB(A) 
Scheduled Power On / Off  
Wake on LAN / WAN  
Power Supply Unit / Adapter 500 W 
Redundant Power Supply  
AC Input Power Voltage 100 V to 240 V AC 
Power Frequency 50/60 Hz, Single Phase 
Power Consumption* 156.23 W (Access)
72.37 W (HDD Hibernation) 
British Thermal Unit 533.08 BTU/hr (Access)
246.94 BTU/hr (HDD Hibernation) 
Notes 
  • Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
  • Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%


Temperature



Temperature


Operating Temperature 0°C to 35°C (32°F to 95°F) 
Storage Temperature -20°C to 60°C (-5°F to 140°F) 
Relative Humidity 5% to 95% RH 

Certification



Certification



  • FCC
  • CE
  • BSMI
  • EAC
  • CCC
  • KC
  • VCCI
  • RCM


Warranty



Warranty


5 Years 
Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) 

Environment



Environment


RoHS Compliant 

Packaging Content



Packaging Content



  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 2
  • Quick Installation Guide X 1


Optional Accessories



Optional Accessories


 
Notes It is required to use D4RD-2666-16G with identical memory modules of the same capacity and frequency. For more information, visit here. 




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             

DSM Specifications

Storage Management



Storage Management


Maximum Internal Volume Number 256 
SSD Read / Write Cache (White Paper)  
SSD TRIM  
RAID Group  
Supported RAID Type 
  • RAID F1
  • 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 
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10

Volume Expansion by Adding a HDD 
  • RAID F1
  • JBOD
  • RAID 5
  • RAID 6

Global Hot Spare Supported RAID Type 
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10


File Services



File Services


File Protocol CIFS/AFP/NFS/FTP/WebDAV 
Maximum Concurrent CIFS/AFP/FTP Connections 4,000 
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) 10,000 
Windows Access Control List (ACL) Integration  
NFS Kerberos Authentication  
Notes 
  • Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
  • During testing, the maximum number of SSDs supported by this model is installed in a RAID 5 configuration.
  • The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed.


Account & Shared Folder



Account & Shared Folder


Maximum Local User Accounts 16,000 
Maximum Local Groups 512 
Maximum Shared Folder 512 
Maximum Shared Folder Sync Tasks 32 

High Availability



High Availability


Synology High Availability  

Log Center



Log Center


 


Log Center


Syslog Events per Second 3,000 

Virtualization



Virtualization


VMware vSphere 6 with VAAI  
Windows Server 2016  
Windows Server 2019  
Citrix Ready  
OpenStack  

General Specifications



General Specifications


Networking Protocols SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV 
Supported Browsers 
  • Google Chrome
  • Firefox
  • Microsoft Edge
  • Internet Explorer 10 onwards
  • Safari 10 onwards
  • Safari (iOS 10 onwards)
  • Google 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, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文 

Add-on Packages view the complete package list

Antivirus by McAfee (Trial)



Antivirus by McAfee (Trial)


 

Central Management System



Central Management System


 

Synology Chat



Synology Chat


 


Synology Chat


Maximum Users 6,000 
Notes 
  • The number of concurrent HTTP connections for Synology Chat was configured to the maximum.
  • For tested models with expandable memory, the maximum amount of RAM was installed.


Document Viewer



Document Viewer


 

Download Station



Download Station


 


Download Station


Maximum Concurrent Download Tasks 80 

exFAT Access (Optional)



exFAT Access (Optional)


 

iSCSI Manager



iSCSI Manager


Maximum iSCSI Target Number 256 
Maximum iSCSI LUN 512 
iSCSI LUN Clone/Snapshot, Windows ODX  

Synology MailPlus / MailPlus Server



Synology MailPlus / MailPlus Server


 


Synology MailPlus / MailPlus Server


Free Email Accounts 5 (Licenses required for additional accounts) 
Maximum Number of Concurrent Users 1,600 
Maximum Server Performance 5,040,000 emails per day, approx. 151 GB 
Notes 
  • Models with more than 4 bays were installed with two SSDs for SSD cache.
  • For tested models with expandable memory, the maximum amount of RAM was 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



Media Server


 


Media Server


DLNA Compliance  

Moments



Moments


 


Moments


Facial Recognition  
Subject Recognition  
Auto Color & Rotate  
Moments Select  

PetaSpace



PetaSpace


 

Snapshot Replication



Snapshot Replication


 


Snapshot Replication


Maximum Snapshots per Shared Folder 1,024 
Maximum of System Snapshots 65,536 

Surveillance Station



Surveillance Station


 


Surveillance Station


Maximum IP cam (Licenses required) 128 (including 2 Free License) (See All Supported IP Cameras) 
Total FPS (H.264) 3840 FPS @ 720p (1280x720)
2800 FPS @ 1080p (1920x1080)
1200 FPS @ 3M (2048x1536)
700 FPS @ 5M (2591x1944)
500 FPS @ 4K (3840x2160) 
Total FPS (H.265) 3840 FPS @ 720p (1280x720)
3840 FPS @ 1080p (1920x1080)
2400 FPS @ 3M (2048x1536)
1300 FPS @ 5M (2591x1944)
800 FPS @ 4K (3840x2160) 
Total FPS (MJPEG) 1000 FPS @ 720p (1280x720)
650 FPS @ 1080p (1920x1080)
490 FPS @ 3M (2048x1536)
320 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.
  • The maximum channel number also includes devices installed on Virtual DSM.
  • Total FPS may be affected by other services running at the same time (e.g., archive tasks performed by Archive Vault).


Synology Drive



Synology Drive


 


Synology Drive


Recommended Number of Hosted Files 5,000,000 (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 2,000 (the number of connections that can be maintained when the recommended number of hosted files was reached) 
Notes 
  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • Utilizing SSD cache can significantly improve performance.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.


Synology Office



Synology Office


 


Synology Office


Maximum Users 3,400 
Notes 
  • Multiple files were opened for testing and each file was edited by 30 users simultaneously.
  • 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 Station


 


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



Virtual Machine Manager


 


Virtual Machine Manager


Recommended Virtual Machine Instances 24 (Learn more) 
Recommended Virtual DSM Number (Licenses required) 24 (including 1 Free License) 
Notes The specifications vary depending on system configuration and memory size. 

VPN Server



VPN Server


 


VPN Server


Maximum Connections 40