The Synology RackStation RS3621RPxs is a powerful 12-bay 2U rackmount NAS solution engineered for high throughput and robust data protection in business environments. Powered by a 2.2 GHz Intel Xeon D-1531 six-core processor with 8GB DDR4 ECC memory (expandable to 64GB), this system delivers strong performance with up to 189,098 4K random read IOPS and 4718 MB/s sequential read speeds for demanding workloads. Featuring four Gigabit Ethernet ports with link aggregation and failover support, the RS3621RPxs ensures reliable network connectivity and redundancy. Built with dual redundant 500W power supplies and hot-swappable fans for maximum uptime, the system supports 3.5" and 2.5" SATA drives with flexible RAID configurations (0, 1, 5, 6, 10, Basic, JBOD) and AES-NI hardware encryption. Expandable to 36 drive bays using two optional RX1217/RX1217RP expansion units, with two PCIe Gen3 x8 slots for 10GbE network upgrades and M.2 NVMe SSD cache acceleration. Running on Synology DiskStation Manager (DSM) with advanced Btrfs file system and snapshot technology, the RS3621RPxs supports Synology High Availability clustering with minute-level failover for mission-critical deployments, backed by a 5-year limited warranty.