Synology FS6420 FlashStation 24-Bay All-Flash Rackmount NAS

All-Flash Storage for Demanding Business Workloads The FS6420 brings twenty-four hot-swappable SATA SSD bays into a 2U storage platform for virtual machines, databases and shared business data. AMD EPYC 7303 processing, 64 GB of ECC registered memory and two built-in 10 GbE ports provide a strong foundation for storage that must remain responsive as workloads overlap. Synology DSM combines file and block storage with snapshots, replication and integrated backup tools. Redundant power supplies and optional high-availability pairing support a deliberate continuity plan. The enclosure is supplied without SSDs; select validated storage and the appropriate rail kit as part of the deployment. Highlights All-Flash Platform 24 × hot-swappable 2.5-inch SATA SSD bays AMD EPYC 7303;16 cores / 32 threads 64 GB DDR4 ECC RDIMM, expandable to 1024 GB Network and Availability 2 × built-in 10 GbE RJ-45; separate out-of-band management 2 × PCIe 4.0 x 16 (x 16 link) Redundant 550 W power supplies and optional two-unit high availability Storage and Deployment DSM file services, iSCSI, snapshots and backup tools Compatible SATA SSDs and RKS-02 rails sold separately 5-year hardware warranty Key Features Give Shared Workloads a Responsive Foundation The FS6420 is designed for I/O-intensive applications that share a central storage platform. Its all-flash SATA architecture and AMD EPYC 7303 processor support concurrent virtual-machine, database and file-service workloads. Size the SSD population, RAID layout, memory and networking together rather than treating a maximum benchmark as a guaranteed application result. Connect at 10 GbE and Expand When Needed Two 10 GbE RJ-45 ports are built in, allowing a suitable network to start without an additional data adapter. Separate out-of-band management supports administration outside the main data path. Compatible PCIe network cards or Fibre Channel adapters can extend the deployment; expansion cards, optics, switches and cabling remain separate purchases. Protect Availability at Multiple Levels Redundant power supplies help address an individual supply failure. Two compatible, identically configured systems can form a Synology High Availability cluster for a supported failover design. These measures serve different failure scenarios and still need correctly planned power, networking and independent backups; one enclosure alone does not provide a second storage server. Build a Maintainable Storage Layout DSM supports Btrfs, iSCSI and a choice of RAID layouts including RAID F1 for an all-flash design. Snapshots and replication provide recovery points when configured appropriately, while storage-efficiency functions can reduce consumption for suitable data. RAID, snapshots and deduplication complement a wider backup plan rather than replacing an independent recoverable copy. Consolidate Business Services with Clear Limits Use supported DSM packages for file collaboration, backup and virtualisation as the installation requires. Surveillance Station includes two camera licences, with additional licences and model-specific recording limits applying beyond that allowance. Camera capacity depends on codec, resolution, recording settings and competing workloads, so size a mixed-use system for the real deployment. Specify the Complete Rack Installation Validated SATA SSDs are mandatory and are purchased separately. RKS-02 rails, compatible memory, network upgrades and any additional software entitlements should be selected before installation. Confirm rack depth, ventilation, power feeds and the supported firmware or drive configuration so that the final system matches both the workload and the site. Summary The FS6420 is an enterprise all-flash storage platform for organisations that need fast shared data services with practical availability and recovery tools. Combine its 24 SATA SSD bays, dual 10 GbE and expandable ECC memory with validated drives, suitable networking and a tested continuity plan. Frequently Asked Questions Are SSDs Included?ExpandCollapse No. This is a diskless all-flash enclosure for compatible 2.5-inch SATA SSDs. Select validated drives and supported firmware before ordering; ordinary NAS hard drives and U.3 NVMe drives are different interfaces and are not substitutes. Which Rail Kit Does It Use?ExpandCollapse The manufacturer specifies RKS-02 for a suitable four-post 19-inch rack. The rail kit is sold separately. Confirm rack depth and installation clearances when planning the system. Can It Use NVMe or SAS Drives?ExpandCollapse Its internal bays are specified for 2.5-inch SATA SSDs. Do not select an NVMe, U.3 or SAS drive solely because its physical size looks similar. Exact drive support must match the manufacturer compatibility list. Does It Include 10 GbE Networking?ExpandCollapse Yes. Two 10 GbE RJ-45 data ports are built in, alongside a separate out-of-band management connection. Optional PCIe adapters support additional network designs; their cards, optics and infrastructure are separate. How Many Surveillance Cameras Can It Record?ExpandCollapse Two camera licences are included. The manufacturer recording limits depend on codec and resolution: H.264 1080p 485 channels at 10 fps;4K 220 channels at 10 fps; H.265 1080p 520 channels at 30 fps;4K 300 channels at 10 fps. Additional camera licences are required, and encryption, enabled services and workload can reduce practical recording capacity. What Do I Need for High Availability?ExpandCollapse A supported Synology High Availability design uses two compatible, matching systems with suitable storage, networking and configuration. The redundant power supplies inside one unit do not turn it into a complete two-server cluster. Keep an independent backup and test failover and recovery. Read more