A customer requires a solution that allows data in RAM to be retained in case of power loss. Which technology should be used?

The appropriate technology for retaining data in RAM during power loss is Non-Volatile Dual In-line Memory Module (NVDIMM). NVDIMMs combine traditional DRAM with flash memory technology. This enables the system to maintain data integrity by writing critical data to the flash memory component in the event of a power failure.

This capability is especially important in environments where data loss can lead to significant operational issues, such as in financial services or high-performance computing applications. By preserving data during unexpected shutdowns, NVDIMMs enhance overall system reliability and ensure continuity of critical operations.

In contrast, the other technologies do not possess non-volatile characteristics. DDR DIMMs are standard DRAM modules that lose their data when power is lost. NVMe is a protocol used for high-speed storage devices and does not pertain to memory retention. SDRAM is also volatile and, like DDR DIMMs, loses stored information upon power loss. Therefore, NVDIMM is the optimal choice for the specified requirement of data retention during power outages.