Until recently, the common approach to using Flash memory technology in embedded devices has been to use a pseudo-filesystem on the flash chips to emulate a standard block device and provide wear levelling, and to use a normal file system on top of that emulated block device. JFFS is a log-structured file system designed by Axis Communications AB in Sweden specifically for use on flash devices ...

The need for low power, small form-factor, secondary storage devices in embedded systems has led to the widespread use of flash memory. Energy consumption due to processor and flash for such devices is critical to embedded system design. In this paper, we have proposed a quantitative account of energy consumption in both processor and flash due to overhead of filesystem related system calls. A ...

Flash memory has many attractive features, such as nonvolatility, light weight, and low power consumption. These features show promise for using flash memory as storage in consumer electronics, embedded systems, and mobile computers. However, flash memory has specific hardware characteristics that impose challenges on the design of storage systems. It cannot be overwritten unless erased in adva...

With the development of flash technologies, flash disks have become an alternative to hard disk as external storage media. Because of the unique characteristics of flash disks such as fast random read access and out-place update, shadow paging technology can be adopted to support transaction recovery in flash-based DBMS. Inspired by shadow paging and logging, we propose a new transaction commit...

There are three underdeveloped components of urban cloud-to-ground lightning studies: (1) the integration of multiple flash descriptors into more informative summary metrics of flash production, (2) the comparison of flash patterns by thunderstorm type, and (3) the correspondence of urban flashes with underlying land use. We used a GIS to integrate these components as part of an analysis of war...

File systems treats Flash storage device as a traditional storage media with their logical address. However inside the Flash storage device, Flash Translation Layer (FTL) remaps logical address to physical address to hide physical limitation of Flash memory cells. Due to the address translation, intentional logical separation of file system’s layout does not directly applied to physical separat...

Triple-Level Cell (TLC) NAND Flash memory at, and below, 20nm (nanometer) is still largely unexplored by researchers, and with the ever more commonplace existence of Flash in consumer and enterprise applications there is a need for such gaps in knowledge to be filled. At the time of writing, there was little published data or literature on TLC, and more specifically reliability testing, with a ...