Achieving energy-efficiency with a next generation NVRAM-based SSD

As more computing and communication resources appear, energy efficiency becomes increasingly important for future information and communication technologies. We need energy-efficient technologies that can reduce the overall energy consumption of computation, storage and communications. Despite the potential of the next generation nonvolatile RAM (NVRAM) for energy savings, it is typically used as storage devices to improve system performance of file systems and is not utilized for the purpose of improving energy efficiency. This paper suggests an energy-efficient writing approach in a file system that adopts the NVRAM-based SSD as a storage device. Simulation results show that the energy efficient writing approach consumes less energy than the conventional writing approach for ideal workloads as both the data size in a write request and the subpage size get smaller.