I installed the TerraMaster D4‑320U into my studio, and it proved to be a fast way to boost on-site data storage

Designed for rack mounting, this 4-bay direct-attached storage (DAS) offers an easy way to quickly boost desktop or NAS storage. The D4-320U is built for pure simplicity, bolts directly into a standard rack, and offers four bays that will take 3.5-inch or 2.5-inch SATA drives, then connects directly to your NAS or computer through a simple USB cable.