基于海量数据存储系统多级存储介质的热点数据区分方法

基于海量数据存储系统多级存储介质的热点数据区分方法宋丽娜;戴华东;任怡

【期刊名称】《计算机研究与发展》

【年(卷),期】2012(049)0z1

【摘要】The application of massive data result in larger pressure in the process of read and write, however, attention must be paid to the performance bottleneck of input and output of system. With the difference of performance and cost of different storage devices, temporal locality and spatial locality of data access, multi-tiered storage is needed. For the frequently change rule of data, variety of data accessed frequency, the big proportion of static data in storage system for cloud data and limitation of high performance storage equipments, migrate data based on multi-tiered storage technology. Define some factors evaluating the value judgement and modify the existing model of value judgement based on file level. With analysis of existing application environment and modified value judgement model, a data migration algorithm based on file level is proposed. Migrate data with heavy access resulting from simultaneously data access, and use the test tool of web simultaneously data access to measure the hardware access. Test the responsing time of simultaneously data access of a web server, which shows that comparing to the normal data migration, the algorithm improves the performance of system.%海量数据的应用导致文