参考服务器/客户端的可堆叠通信模式,以最常见的SATA硬盘作为存储介质,Marvell 88SM9705为核心控制芯片,设计了一种可堆叠的存储介质。经测试,88SM9705通过解析主机端发送来的SATA 3.0协议定义的帧信息结构(Frame Information Structure...参考服务器/客户端的可堆叠通信模式,以最常见的SATA硬盘作为存储介质,Marvell 88SM9705为核心控制芯片,设计了一种可堆叠的存储介质。经测试,88SM9705通过解析主机端发送来的SATA 3.0协议定义的帧信息结构(Frame Information Structure,FIS)中PM Port地址字段,能依次对其所连接的多个SATA硬盘进行正确的读、写等操作,实现了存储设备的可堆叠,稳定性能良好。是一种实现扩容同步提速的可堆叠存储阵列解决方案,在嵌入式存储系统领域具有很好的应用前景。展开更多
Storage management strategy can be expressed by a file system. Commercial file system for embedded application is generally complicated and resource wasted. In this paper, a specified file system adapted to embedded s...Storage management strategy can be expressed by a file system. Commercial file system for embedded application is generally complicated and resource wasted. In this paper, a specified file system adapted to embedded system with flash-based memory is developed. To guarantee the average usage of flash storage sectors, the strategy of wear leveling and adaptive damage management is introduced, in which a dynamic storage space management mode and the strategy of first in first out (FIFO) are adopted. Moreover, the strategy of redundancy design and fast-calculation and tracing is also adopted to extend the life of kernel sector, which can guarantee the reliable service of system booting. The practical application in an embedded CNC (computerized numerical control) platform proves that the file system has effective performance. Furthermore, the flash file system can be transplanted to different embedded platforms by changing a few bottom hardware parameters with universality.展开更多
基金Supported by National Natural Science Foundation of China (No50475117)Specialized Research Fund for the Doctoral Program of Higher Education of China (No20060056016)
文摘Storage management strategy can be expressed by a file system. Commercial file system for embedded application is generally complicated and resource wasted. In this paper, a specified file system adapted to embedded system with flash-based memory is developed. To guarantee the average usage of flash storage sectors, the strategy of wear leveling and adaptive damage management is introduced, in which a dynamic storage space management mode and the strategy of first in first out (FIFO) are adopted. Moreover, the strategy of redundancy design and fast-calculation and tracing is also adopted to extend the life of kernel sector, which can guarantee the reliable service of system booting. The practical application in an embedded CNC (computerized numerical control) platform proves that the file system has effective performance. Furthermore, the flash file system can be transplanted to different embedded platforms by changing a few bottom hardware parameters with universality.
