Description
The Synology DS1621+ is a compact 6‑bay NAS designed to store and protect critical data. It supports expansion to 16 drives, dual M.2 NVMe cache slots, and 4x 1GbE networking for scalable home or small‑office storage.

Overview
Device Score Summary
| Category | Score | Rationale |
|---|---|---|
| Features | ★★★★★ | 6 bays, NVMe cache, and expansion support |
| Interoperability | ★★★★☆ | DSM integration plus broad network protocol support |
| Setup Ease | ★★★★☆ | Well‑documented, UI‑driven setup |
| Cloud Dependency | ★★★★★ | Local NAS; cloud optional for backups |
| Vendor Trust | ★★★★☆ | Strong Synology ecosystem and support |
| Overall | ★★★★★ | Excellent core NAS for home lab storage |
★★★★★ Exceptional | ★★★★☆ Very Good | ★★★☆☆ Good Enough | ★★☆☆☆ Frustrating | ★☆☆☆☆ Avoid