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Most solid state drives use DRAM for device's cache, the volatile memory provides the I/O Caching ability, and maintains the drives' mapping table (indicates the correspondence between physical unit and logical unit). However, when the drives' power shut down unexpected, the volatile DRAM memory may lose the caching data, which did not have time to write to the drives' storage media, so the dirty...
In this paper, we present a network server architecture which concentrates popular data on both HDD and NAND flash. Popular Data Concentration (PDC) is a well known technique to reduce the power consumption of disk arrays. We extended PDC by adding NAND flash based Solid State Drive (SSD) and achieved better performance and energy savings. We developed a novel file placement policy which places popular...
The demand for real-time data services in embedded systems is increasing. In these new computing platforms, using traditional buffer management schemes, whose goal is to minimize the number of I/O operations, is problematic since they do not consider the constraints of those platforms such as limited energy and distinctive underlying storage. In particular, due to asymmetric read/write characteristic...
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