Synology RackStation RS2821RP+ is a powerful, high-performance, versatile, and scalable 16-Bay rackmount NAS designed for a diverse set of business requirements, while providing backup & restoration functionality; sliding rail kit is included for effortless server installation. Form Factor: NAS Rack Server Internal File System Format: EXT4, Btrfs Ports: 4 x RJ-45 1GbE LAN Ports (both with Link Aggregation / Failover support); 2 x USB 3.2 Ports; 1 x Expansion Port; Btrfs File System for Advanced LUN iSCSI Service Processor: Ryzen V1500B 4-Core 2.2GH z CPU Memory: 32GB DDR4 ECC UDIMM Storage: 16TB (16 x 1TB) SATA 2.5" SSDs for Ultra-Fast, High-Speed Storage Power: Redundant Power Supply Operating System: Synology DSM Software Provides reliable & safe data security & lightning-fast performance. Supports large multi-user environments while handling data sensitive workloads. Comes in a sealed box. Hard drives & memory upgrades included separately NOT installed, installation required.