The Synology FlashStation FS3420 is a powerful 2U all-flash rackmount NAS built for organizations requiring exceptional performance, ultra-low latency and maximum availability. Supporting up to 24 SATA SSDs, powered by an Intel Xeon D-1739 processor and equipped with 32 GB ECC memory, the FS3420 is an ideal storage platform for virtualization, databases, VDI environments, backup repositories and other mission-critical workloads.
Powered by Synology DiskStation Manager (DSM), the FS3420 combines enterprise-class performance with intuitive management, advanced security and comprehensive data protection.
Built for high-performance workloads
Delivering over 169,000 4K random write IOPS, the FS3420 excels in latency-sensitive environments. Its 24 all-flash drive bays provide consistent high-speed performance for virtual machines, enterprise databases and business-critical applications.
Enterprise networking flexibility
Dual integrated 10GbE RJ45 ports provide fast connectivity out of the box, while two PCIe Gen4 expansion slots allow easy upgrades with additional 10GbE, 25GbE or Fibre Channel adapters to match growing infrastructure demands.
Maximum uptime
Designed for continuous operation, the FS3420 features hot-swappable SSDs, redundant power supplies, online volume expansion and Synology High Availability, enabling maintenance and hardware replacement without interrupting services.
Optimized for virtualization
The FS3420 is fully certified for VMware vSphere, Microsoft Hyper-V, Citrix Hypervisor and OpenStack. Support for VMware VAAI, Windows ODX and Synology Storage Console simplifies storage management while improving virtual machine performance.
Comprehensive backup and disaster recovery
Synology Active Backup Suite provides license-free protection for physical servers, virtual machines, Microsoft 365, Google Workspace and Synology systems. Snapshot Replication, Hyper Backup and Synology C2 Storage offer comprehensive disaster recovery and ransomware protection.
Enterprise-grade security
Protect critical business data with full-volume encryption, immutable snapshots, WriteOnce shared folders and AI-assisted ransomware detection through Synology Active Insight, ensuring data integrity and business continuity.
Intelligent storage optimization
Synology Tiering automatically moves inactive data to lower-cost storage while keeping frequently accessed data on high-performance flash storage, maximizing both performance and storage efficiency.
Key features
- 24-bay 2U all-flash rackmount NAS
- Supports 24 × 2.5-inch SATA SSDs
- Intel Xeon D-1739 processor (8 cores / 16 threads)
- 32 GB DDR4 ECC RDIMM, expandable to 192 GB
- Over 169,000 4K random write IOPS
- Dual 10GbE RJ45 ports
- Two PCIe Gen4 x8 expansion slots
- Supports 10GbE, 25GbE and Fibre Channel expansion
- Hot-swappable SSDs and redundant power supplies
- Certified for VMware, Hyper-V, Citrix and OpenStack
- Active Backup Suite, Snapshot Replication and Hyper Backup
- Full-volume encryption and immutable snapshots
- Synology High Availability support
