The Synology SA3200D is an enterprise-grade 12-bay 2U rackmount high-availability NAS featuring dual independent controllers in active-passive configuration for automatic failover and maximum uptime. Each controller is powered by a 2.4 GHz Intel Xeon D-1521 quad-core processor with 8GB DDR4 ECC registered RAM (16GB total, expandable to 128GB with 64GB per controller), ensuring hardware redundancy to prevent single points of failure. Features dual 10 Gigabit Ethernet and four Gigabit Ethernet ports (one 10GbE and two 1GbE per controller) with link aggregation and failover support for robust network connectivity. Built with dual modularized redundant 500W power supplies and hot-swappable 60mm fan modules (two per controller) to maintain continuous operations during maintenance. Supports 3.5" and 2.5" SAS hard drives and SSDs with flexible RAID configurations (0, 1, 5, 6, 10, Basic, F1, JBOD) and AES-NI hardware encryption. Expandable to 36 drive bays using two RXD1219sas expansion units via mini-SAS HD ports, with two PCIe Gen3 x8 slots (one per controller) for 10/25GbE network upgrades. Utilizes SATA DOM for operating system isolation and Non-Transparent Bridge (NTB) technology for faster, lower-latency connectivity between controllers. Running on DiskStation Manager (DSM) with Synology High Availability for real-time system-level protection, Snapshot Replication for shared folders and iSCSI LUNs, Active Backup Suite for VMware, Windows, Microsoft 365, and Google Workspace, and Virtual Machine Manager for sandboxed testing. Fully certified for VMware vSphere with VAAI integration, Windows ODX, and OpenStack Cinder support. Ideal for mission-critical virtualization environments, backup repositories, and enterprise applications requiring zero downtime. Backed by a 5-year limited warranty with Synology Replacement Service (SRS) offering next-business-day advance replacement in selected regions.