Synology SA3400D
12-Bay NAS Server Active-Passive, Dual Controllers
The Synology SA3400D is a high-availability and high-performance 12-Bay NAS Server designed for mission-critical enterprise environments. This storage solution features a unique active-passive dual-controller architecture, which ensures business continuity and minimizes downtime. In the event of a controller failure, the passive controller seamlessly takes over, providing uninterrupted access to data. This design makes the SA3400D an ideal choice for businesses that require maximum uptime and data integrity for their critical applications and services.
The SA3400D is a robust and scalable solution, providing a solid foundation for large-scale data storage, virtualization, and file sharing. With its advanced features and resilient design, it is a cornerstone for building a reliable and secure IT infrastructure.
Features :
The Synology SA3400D is equipped with powerful hardware to handle demanding workloads. Each of the two controllers is powered by an Intel Xeon D-1521 quad-core processor and includes 16 GB of DDR4 ECC RDIMM, expandable up to 128 GB. This dual-controller setup not only provides failover capabilities but also distributes the workload for better performance. The server supports a wide range of drive types, including SAS and SATA HDDs and SSDs, and is compatible with Synology’s extensive software ecosystem. It supports various RAID configurations, allowing you to balance performance and data redundancy according to your needs. The SA3400D is also equipped with multiple 10GbE and Gigabit Ethernet ports for high-speed network connectivity.
Advanced Options :
The SA3400D’s active-passive design provides superior redundancy and failover protection, ensuring that your data remains accessible even in the face of hardware failure. This NAS Server is also highly scalable, allowing you to expand your storage capacity by adding up to two Synology RXD1219sas expansion units, for a total of 36 drive bays. It runs on Synology’s DiskStation Manager (DSM) operating system, which offers a user-friendly interface and a rich set of applications for data management, backup, and virtualization. The SA3400D supports various enterprise-level features, including snapshots, data deduplication, and integration with third-party backup solutions, making it a comprehensive and dependable storage solution for any enterprise.
Product Key Features
- 12-Bay rackmount NAS Server
- Active-passive dual-controller architecture
- Intel Xeon D-1521 processors
- 16 GB DDR4 ECC RDIMM per controller (expandable to 128 GB)
- High availability and automatic failover
- Scalable up to 36 drive bays with expansion units
- Supports SAS and SATA drives
- Multiple 10GbE and Gigabit Ethernet ports
Reliability & Performance :
The Synology SA3400D is built for unwavering reliability and performance. Its active-passive dual-controller design provides a robust layer of protection against unexpected hardware failures, ensuring that your business operations continue without interruption. The powerful processors and large memory capacity allow the server to handle high I/O demands and support a large number of concurrent users. With its focus on redundancy and performance, the SA3400D is a dependable foundation for business-critical applications, ensuring data integrity and accessibility at all times.
Key Features :
- Dual controllers for high availability
- 12 drive bays (expandable)
- SAS and SATA compatibility
- High-speed 10GbE connectivity
- Data deduplication support
- Snapshot technology
- Backed by Synology’s robust DSM operating system





Write a Review