Synology NAS SA3400
Synology NAS SA3400
Synology NAS SA3400
Synology NAS SA3400
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Synology NAS SA3400

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Highly-Scalable Storage For Large-Scale Businesses

Synology SA3400 is a 12-bay rackmount NAS designed for large and extensive scaling of data storage. Its comprehensive data protection technologies, including High Availability, hybrid cloud backup, and server or virtual machine backup approaches, make it a reliable server for massive storage deployment.


  • A highly scalable rackmount NAS to aptly accommodate
large businesses' needs for scalability, suitable for video
post-production and massive surveillance deployment

  • TCO-optimized storage companion, offering various
and flexible support for both SAS and SATA drives

  • Scale up to 180/96 drives when connected with 7 RX2417sas/RX1217sas1

  • Built-in dual 10GbE and quad 1GbE ports with failover
and Link Aggregation support

  • Elastic expandability with dual PCIe 3.0 x8 slots for
installing additional 10/25GbE network interface cards

  • Effortless data protection for your physical server,
virtual machines, and cloud services through Synology
Active Backup Suite

  • Advanced iSCSI storage supports various virtualization
deployment, including VMware vSphere, Windows
Hyper-V, Citrix XenServer, and OpenStack Cinder

Technical Specifications


CPU Model Intel Xeon D-1541
  CPU Quantity 1
  CPU Architecture 64-bit
  CPU Frequency 8-core 2.1 (base) / 2.7 (turbo) GHz
  Hardware Encryption Engine (AES-NI)  


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 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.
For more information on memory upgrade limitations, visit here.
For more information on the recommended memory configurations, visit here.


Drive Bays 12
  Maximum Drive Bays with Expansion Unit 96 (RX1222sas/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
  Hot Swappable Drive*  
  Notes "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.

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 Expansion 2 x Gen3 x8 slots (x8 link)

File System

Internal Drives Btrfs
  External Drives Btrfs
  Notes exFAT Access can be installed for free from Package Center in DSM 7.0. In DSM 6.2 or earlier versions, exFAT Access needs to be purchased in Package Center.


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 - RKS-02)
  Notes The rail kit is sold separately


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 100V to 240V AC
  Power Frequency 50/60 Hz, Single Phase
  Power Consumption 137.17 W (Access)
70.95 W (HDD Hibernation)
  British Thermal Unit 468.04 BTU/hr (Access)
242.09 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%


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




RoHS Compliant

Packaging Content

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