Powerful, scalable, and versatile Synology DS1621+ is a powerful and compact 6-bay network attached storage solution designed to store and protect critical data assets. Today’s growing amount of unstructured data requires smarter and increasingly higher performance methods of storing, accessing, and collaborating. Designed for scalability, the DS1621+ enables you to start small, then expand as your data grows. CPU Cache Acceleration Performance Scalability AMD Ryzen™ Quad-core 2.2 GHz Dual M.2 2280 slots for NVMe Cache 110K, 174% higher 4K random read IOPS 1 Expand up to 16 drives with two DX517 expansion units   Faster than ever Compared to its predecessor, DS1621+ is faster in just about everything. Get things done quicker through Synology Drive and streamline photo management with Synology Moments. 1 Turbocharge and expand it Upgrade your DS1621+ to match your data requirements, whether it is for faster networking or for higher storage capacity. 2 x M.2 NVMe - Enable ultra-fast NVMe cache to accelerate HDD arrays by 20X or more 10GbE support - Add in faster SFP+ or RJ-45 networking to turbocharge existing workflows Storage Expansion - Supports two DX517 expansion units for a total of 16 bays HDD/SSDs, 10GbE network adapter cards, and expansion units are sold separately. Ultimate file management and sharing File Station is a web-based, fast and secure management tool built to allow easy, drag-and-drop operations without requiring any complex setup on Mac or PC. Advanced search and filtering tools allow for easy organization and file sharing. For complete compatibility, DS1621+ supports the following protocols: AFP, FTP, iSCSI, NFS, SMB, and WebDAV.   Fully certified storage virtualization solutions Synology iSCSI storage fully supports most virtualization solutions to enhance work efficiency with easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations and optimizes computation efficiency. Windows Offloaded Data Transfer (ODX) speeds up data transfer and migration rate. OpenStack Cinder support turns your Synology NAS into a block-based storage component. Ultimate Backup Solution DS1621+ integrates various backup applications into an intuitive user interface, offering durable storage technologies to safeguard your valuable data on any device. Powered by Synology DSM Central Management System Manage multiple Synology NAS servers simultaneously on a centralized interface to increase business efficiency. Synology MailPlus Secure, reliable, and private mail server solution with an intuitive and modern mail client. Synology High Availability Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications. Security Comprehensive built-in security tools are constantly updated to protect your devices against evolving threats. Synology Drive A versatile solution for file management and synchronization.  Surveillance Station Complete surveillance solution for recording, monitoring, and management.