The Synology DS923+ is a capable 4-bay NAS solution that can be adjusted and expanded as your needs change, with optional support for up to nine drives, faster networking, and NVMe SSD caching. Powered by Synology DiskStation Manager (DSM), it offers a flexible all-in-one solution for data sharing, synchronization, backup, and surveillance. With additional purchases - RAM can be upgraded to 32GB and 10GbEconnectivity possible.Warranty can be extended to 5yrs with the purchase of EW201!