The Samsung M393A2G40DB0-CPB is a 16GB DDR4-2133 ECC registered server DIMM, suited to compatible servers and workstations that require 288-pin 2Rx4 memory.
Recommended For
- Server and homelab operators expanding a compatible DDR4-2133 ECC RDIMM host for virtual machines or self-hosted services; community homelab builds commonly use ECC RDIMMs in virtualization servers, and the module is listed on a server-board memory compatibility list.
- IT teams and refurbishers maintaining older DDR4 server platforms that specifically support 16GB, 2Rx4 ECC registered DIMMs at 2133 MT/s; confirm the server’s memory support list before buying.
- Owners replacing a failed or mismatched module in a server that already uses compatible ECC RDIMMs and supports this module’s 2Rx4 organization and speed.
- Server builders who want ECC registered memory and can work within a 2133 MT/s module rating and their platform’s DIMM-population rules.
Real-World Use Scenarios
- Expanding a compatible DDR4 server that runs several virtual machines: adding this module can provide more memory to allocate across guests, though the total capacity and supported configuration depend on the server.
- Adding memory to a compatible TrueNAS or ZFS file server: extra RAM can support ZFS read caching and server services, while ECC provides an additional defense against memory errors; one 16GB module is only a capacity increment, not a complete sizing recommendation.
- Replacing a failed or mismatched DIMM in a supported older server: using a module listed for the server can restore memory capacity, but check the system’s memory population rules and compatibility list before installing it.
- Building or expanding a home-lab server for always-on services such as file sharing and self-hosted applications: this ECC registered memory suits platforms that support RDIMMs, helping add capacity without using consumer desktop memory.
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