Synology DS920+ 48TB 4 Bay Desktop NAS Solution | Installed with 4 x 12TB Toshiba N300 Drives Average 15% performance boost to photo indexing and other computing-intensive operations, as well as database response time Built-in M.2 2280 NVMe SSD slots permit cache acceleration without occupying storage drive bays Flexibly scale up to nine drives to increase storage capacity as demand grows Build an on-premises, multi-user collaboration environment with fine-grained control Back up critical data and reduce your Recovery Time Objective (RTO) with Snapshot Replication Synology DiskStation DS920+ is an ideal network-attached storage solution designed to streamline data management and productivity. Two built-in M.2 SSD slots and Synology SSD Cache technology allow you to boost system I/O and application performance. With scalable storage design, DS920+ lets you start small and expand storage capacity with the Synology DX517 as your data grows.