Xeon D-1521 4-Core 2.4GHz CPU; 64GB DDR4 ECC UDIMM Memory; 240TB (12 x 20TB) SATA 3.5' HDDs for High-Capacity Storage High-Performance Scalable Storage: Synology RS3618xs is a robust and reliable NAS solution designed for large-scale enterprises with demanding business applications Ultimate Backup Solution: RS3618xs integrates various backup applications into an intuitive user interface, ensuring durable storage technologies to safeguard valuable data on any device Next-Generation File System for Data Protection: The Btrfs file system employed by RS3618xs introduces advanced storage technologies and optimized snapshots to prevent data corruption and reduce maintenance overhead. With features like a flexible shared folder/user quota system, snapshot replication, file or folder-level data restoration, and automatic file self-healing, it offers efficient data protection and recovery tools Hard drives and memory upgrades included separately not installed, installation required