Synology RS820+ 64TB 4 Bay Rack Solution | Installed with 4 x 16TB Toshiba Enterprise Drives 4-core, 2. 1 GHz CPU with AES-NI support. 2 GB DDR4 memory expandable up to 18GB Outstanding 10Gb E sequential performance at over 1, 621 MB/s reading and 599 MB/s writing Scale up to 8 drives with Synology Expansion Unit RX418 One PCIe 3. 0 slot for an optional 10Gb E add-in network interface card, or an M2D18 M. 2 SSD adapter card Advanced Btrfs file system offering 65, 000 system-wide snapshots and 1, 024 snapshots per shared folder Synology High Availability (SHA) providing continuous services with seamless transitioning between clustered servers Synology Rack Station RS820+/RS820RP+ is an ideal network-attached storage solution for centralizing data management. Powered by a 4-core processor, RS820+/RS820RP+ provides both high performance and scalable storage, ideal for file sharing across different platforms and data backup. Synology RS820+/RS820RP+ is backed by Synology\'s 3-year limited warranty.