The Synology FlashStation FS6400 is a high-performance 24-bay 2U all-flash NAS enclosure engineered for I/O-intensive and latency-sensitive applications including multimedia post-production, virtual machines, online transaction processing, and database workloads. Powered by dual 2.1 GHz Intel Xeon Silver 4110 eight-core processors (burst up to 3.0 GHz) with 32GB DDR4 ECC registered RAM (expandable to 512GB), delivering exceptional performance with over 240,000 4K random write IOPS. Features dual 10 Gigabit Ethernet and two Gigabit Ethernet ports with link aggregation and failover support for robust network connectivity. Built with dual redundant 800W power supplies and hot-swappable 80mm fans for maximum uptime. Supports 2.5" SAS and SATA SSDs with advanced RAID F1 configuration specifically designed for SSDs with uneven workload distribution to enhance storage pool resilience, plus RAID 0, 1, 5, 6, 10, Basic, and JBOD. Expandable using two RX1217sas or two FX2421 expansion units via dedicated expansion port, with two PCIe Gen3 x8 slots for optional 10GbE/25GbE network upgrades. Running on DiskStation Manager (DSM) with advanced Btrfs file system featuring automatic file self-healing, 65,000 system-wide snapshots, and flexible folder/user quota control. Supports up to 16,000 user accounts and 10,000 concurrent connections. Fully certified for VMware vSphere, Microsoft Hyper-V, Citrix XenServer, and OpenStack Cinder virtualization environments. Includes Security Advisor, AppArmor kernel-level protection, AES 256-bit encryption, and 2-step verification. Ideal for enterprise environments requiring ultra-fast all-flash storage with Synology High Availability clustering support. Backed by a 5-year limited warranty with Synology Replacement Service (SRS) offering next-business-day advance replacement in selected regions.