Fast storage with outstanding computing power RS1619xs+ is a high-performance and scalable 1U rackmount NAS designed with upgradable memory and M.2 SSD cache configuration to meet the needs of modern businesses that require a flexible, reliable, and efficient storage solution. Variable options to boost system computing performance Equipped with a PCIe 3.0 slot, RS1619xs+ supports installing a 10GbE/25GbE NIC for fast data transmission. Built-in M.2 2280 SSD cache slots further benefit IO-intensive tasks, such as virtualization or mail server deployment. Complete iSCSI and virtualization solutions Synology iSCSI storage supports most virtualization solutions including VMware vSphere, Microsoft Hyper-V, Citrix Xen Server, and OpenStack Cinder, to enhance work efficiency. Create and manage virtual machines running multiple operating systems such as Windows, Linux, and DSM using Virtual Machine Manager. Synology Replacement Service (SRS) SRS provides free advance replacement units as early as the next business day in selected regions, maximizing the service uptime for your mission-critical storage and ensuring your business continuity. Next-generation file system for better data protection The Btrfs file system introduces advanced storage technologies and optimized snapshots to prevent data corruption and reduce maintenance overhead. While ensuring high-level data integrity, it also offers flexible, efficient data protection and recovery tools. Ultimate Backup Solution RS1619xs+ integrates various backup applications to safeguard your important data on any device with an intuitive user interface and durable storage technologies.