RackStation RS3618xs is a powerful, high-performance, versatile, & scalable 12-Bay rackmount NAS designed for simplifying data management & optimizing virtualization environments; sliding rail kit included for server installation. Superior network-attached storage solution for demanding enterprise applications. Expands storage capacity with minimal time investment in setup & maintenance. Xeon D-1521 4-Core 2.4GHz CPU, Up To 2.7GHz Turbo; 64GB DDR4 ECC UDIMM Memory; 216TB (12 x 18TB) SATA 3.5' HDDs for High-Capacity Storage; 4 x RJ-45 1GbE LAN Ports (with Link Aggregation / Failover support); 2 x USB 3.2 Ports; 2 x Expansion Ports; Btrfs File System for Advanced LUN iSCSI Service Provides solid & protected data security & lightning-fast performance. Supports large multi-user environments while handling data sensitive workloads. Designed for business-oriented needs. NAS chassis comes in sealed box. Hard drives & memory upgrades included separately, NOT installed, installation required.