Synology RS1619xs+

The RS1619xs+ packs a quad-core Xeon and dual onboard M.2 NVMe/SATA cache slots into a compact 1U, 4-bay chassis — a strong fit for growing businesses that need fast metadata and cache performance without a full-size rack unit. It scales to 16 drives with one expansion unit. The onboard M.2 slots are the distinguishing feature: every other model at this price point requires a PCIe card to add NVMe cache, which competes with the slot needed for 10GbE. A 64 GB memory ceiling and five-year warranty put it in the xs tier despite the small chassis.