This product is either discontinued or we cannot get that from suppliers.
Synology RackStation RS2421RP+ 12-Bay 2U Diskless Scalable NAS Ryzen CPU 4GB RAM, Max RAM Capacity 32 GB (16 GB x 2), Drive Bays 12, Max Drive Bays w/ Expansion Unit 24 (RX1217/RX1217RP x 1), Compatibility 3.5" & 2.5" SATA HDD, 2.5" SATA SSD, I/O 4x RJ45 1GbE LAN, 2x USB-A 3.2 Gen1, 1x Expansion Port, PCIe Expansion 1 x Gen3 x8 slot (x4 link), Form Factor (RU) 2U, PSU 500W Redundant, CPU AMD Ryzen V1500B, RAM 4 GB DDR4 ECC UDIMM.
Synology RackStation RS2421RP+ (redundant power) is 2U 12- bay rackmount NAS with cost-effective file management, sharing, and backup capabilities, specially designed for small business and remote office deployments.