Xeon D-1541 8-Core 2.1GHz CPU, Up To 2.7GHz Turbo; 64GB DDR4 ECC UDIMM Memory; 240TB (12 x 20TB) SATA 3.5' HDDs for High-Capacity Storage Accelerate Your Business Operations: The Synology RS3621RPxs+ is a high-performance enterprise storage solution designed to turbocharge business operations. With impressive capabilities, including over 238K 4K random read IOPS and 5,819 MB/s sequential read throughput, this 12-bay powerhouse features full power supply redundancy, an 8-core Xeon processor Storage You Can Trust: The RS3621RPxs+ prioritizes data protection, allowing you to concentrate on delivering exceptional results to your customers, even in the face of disasters Storage for Virtualization: Synology iSCSI storage seamlessly integrates with mainstream virtualization solutions such as vSphere, Hyper-V, XenServer, and Cinder. With features like vSphere 6.5 and VAAI integration Hard drives and memory upgrades included separately not installed, installation required