QNAP ES1686dc rack server Enterprise ZFS NAS features Intel Xeon D processors Delivering enterprise high availability, the ES1686dc Enterprise ZFS NAS features Intel Xeon D processors, dual active controllers, up to 512 GB DDR4 ECC memory, SAS 12Gb/s, and ZFS that supports logical volume management. The ES1686dc runs the latest QES 2.1.0 operating system that supports near-limitless snapshots, SnapSync, block-level data deduplication, and inline data compression. Whether being used as a mission-critical file server, virtualization server, VDI, medium-sized data center, video streaming, surveillance storage, and efficient file backup recovery, the ES1686dc helps your business to achieve service-level agreements for performance and uptime. Dual active-active controllers Intel Xeon D dual active-active controllers provide supreme uptime and redundancy to ensure high availability. Reliable High-performance Battery-protected DRAM write to cache data protection and Flash read acceleration provides industry-leading random access performance. 2 x PCIe Gen 3 slots PCIe expandability allows for 10GbE/25GbE adapters to increase application performance. 4 x 10GbE SFP+ ports Four 10GbE SFP+ ports accelerate virtualization, large file sharing, and intensive data transfer. Real-time SnapSync Near-limitless snapshots and SnapSync for snapshot remote backup assist businesses to resume essential services in the shortest time. Virtualization applications Supports VMware vSphere 6.5, Windows Server 2016 and Citrix XenServer 7.0 for storage virtualization. Compatible with OpenStack cloud environments. Active Standby Single End Backup Architecture Active Active Dual Active Controller Architecture