Synology D4EU02-16G 16 GB DDR4 ECC UDIMM

Keep storage services responsive as user counts, virtual machines, and backup jobs increase. This 16 GB Synology DDR4 ECC unbuffered DIMM is designed for compatible NAS platforms that need more memory headroom without sacrificing reliability. ECC support helps detect and correct memory errors, a practical advantage in always-on systems where uptime and data consistency matter. For teams running file services, surveillance, virtualization, or container workloads on Synology hardware, additional RAM can reduce contention and improve the system’s ability to manage active tasks. The unbuffered DIMM design aligns with supported Synology platforms that specify this memory class, helping ensure compatibility and predictable behavior. Choose this module when the workload has outgrown base memory and you want a vendor-aligned upgrade path rather than a generic third-party part. It is a straightforward way to extend the useful life of a NAS while preserving the stability expectations of enterprise storage infrastructure.