A Reliability Enhancing Mechanism for a Large Flash Embedded Satellite Storage System
A Reliability Enhancing Mechanism for a Large Flash Embedded Satellite Storage System
复制标题
大型闪存嵌入式卫星存储系统的可靠性增强机制
DOI：
--
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
S. Zertal
中科院分区：
文献类型：
--
作者：
S. Zertal
本文提出了一种基于MLC NAND闪存芯片的嵌入式卫星存储架构。我们专注于数据可靠性，并通过将RAID5机制与闪存技术相适应来增强数据可靠性。这种调整同时考虑了应用和技术特征：特定的访问配置文件决定了条带化粒度，特定的闪存技术决定了数据放置/管理策略。它产生了一种高效的机制，在FTL（闪存转换层）级别实现简单，无需使用任何垃圾收集。因此，使用该机制提高可靠性导致在特定的星上卫星存储环境中提高性能。
In this paper, we propose an embedded satellite storage architecture based on the MLC NAND flash memory chips. We focus on data reliability and enhance it by adapting the RAID5 mechanism to the flash technology. This adaptation takes into account both the application and the technology characteristics : the specific access profile determines the striping granularity and the specific flash technology determines the data placement/management policy. It results an efficient mechanism, simple to implement at the FTL (flash translation layer) level without any use of the garbage collection. Thus, improving reliability using this mechanism leads to improving performance in the particular on-board satellite storage context.