The Synology SNV5420 1.6TB is a high‑endurance PCIe 3.0 ×4 NVMe M.2 SSD engineered specifically for Synology NAS systems to deliver superior reliability, performance, and longevity in continuous 24/7 cache operations. Featuring premium 3D TLC NAND and an enterprise‑grade controller, the SNV5420 provides consistent transfer rates of up to 3,100 MB/s read and 1,200 MB/s write, ensuring fast access to frequently used data and improved overall NAS responsiveness. Designed for demanding read/write‑intensive caching workloads, it features an endurance rating
The Synology SNV5400 800GB is a high‑endurance PCIe 3.0 ×4 NVMe M.2 SSD purpose‑built for enterprise and data‑intensive Synology NAS environments, delivering consistent performance, low latency, and long‑term reliability in 24/7 operations. Designed with advanced 3D TLC NAND and an enterprise‑class controller, the SNV5400 is optimized to serve as a dedicated SSD cache drive that accelerates system responsiveness and improves storage I/O performance for frequently accessed data.