Synology RS422+

The RS422+ is a compact, affordable 1U, 4-bay rackmount built for home labs and small businesses that need basic centralized storage, backup, and surveillance archiving without a big footprint or budget. At 295.5 mm deep it fits shallow racks and wall cabinets where a full-depth chassis will not. It is the entry point of the RS range and the only model here with non-expandable memory — 2 GB DDR4 ECC is fixed — so it should be specified for workloads that will stay modest rather than ones expected to grow into it.