2014nccet：闪存阵列的可重构策略

利用低延迟、低功耗、高可靠的NAND Flash构建闪存存储阵列是实现高性能存储系统的有效手段。但应用传统RAID技术构建闪存存储阵列，会引入磨损均衡，校验数据更新频繁导致阵列生命周期降低等问题。针对闪存固有的读写特性，设计实现了一种基于NAND Flash的高性能RAID机制——基于缓存的可重构RAID策略（Cache-Based Reconfigurable RAID，CBR-RAID）。该机制采用可重构条带的思想，利用非易失存储器SCM（Storage Class Memory）作为缓存，对数据顺序重组。实验结果表明该策略能够有效降低垃圾回收开销，提高闪存阵列的性能和使用寿命

A Reconfigurable RAID Mechanism Of NAND Flash

Building storage array based on the low latency, low power consumption, and high reliability NAND Flash is an efficient way to implement high-performance storage system. However, adopting traditional RAID techniques to build storage array based on NAND Flash bring several problems such as wear-leveling and decreasing lifecycle of storage array caused by updating parity code frequently. In this paper, we propose a cache-based reconfigurable RAID mechanism that dynamically constructs a new data stripe based on the non-volatile SCM (Storage Class Memory). Experimental results show that this mechanism can reduce the garbage collection overhead, improve the performance and lifecycle of storage array based on NAND Flash efficiently.