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长久以来,传统机械磁盘的读写速率低是计算机系统不容忽视的问题,尤其是正值大数据技术飞速发展的时代,计算与存储之间的性能差异越来越明显,读写瓶颈问题也愈发严重.MRAM(Magnetic Random Access Memory)具有非易失性、读写速度快和擦写次数无限制等特点,可以有效地缓解存储瓶颈的问题,因而成为了研究热点.基于MRAM建立一套内存数据组织结构,并研究异构副本的存储策略具有一定的研究意义.在Ceph分布式文件系统的基础上,设计出一套基于MRAM的内存管理模块,并将Ceph系统的磁盘-磁盘(主从副本均存储在磁盘上)多副本存储方式修改成MRAM-磁盘(主副本存储在MRAM上,从副本存储在磁盘上)的异构副本存储策略.在详细介绍了异构副本方案的同时,也对其进行了相应的性能测试和分析.
For a long time, the low reading and writing speed of traditional mechanical disks is a problem that computer systems can not ignore. Especially in the era of rapid development of big data technology, the performance difference between computing and storage becomes more and more obvious. It has become a research hotspot.MRAM (Magnetic Random Access Memory) has the characteristics of non-volatile, fast read and write and unlimited number of erase and write, which can effectively alleviate the storage bottleneck.Therefore, Data organization structure and researching the storage strategy of heterogeneous copy.This paper designs a set of MRAM-based memory management module on the basis of Ceph distributed file system, and puts the Ceph system’s disk-disk Copy is stored on disk) Multi-copy storage mode is modified into a heterogeneous copy storage strategy for MRAM-disks (the primary copy is stored on the MRAM and the copy is stored on disk.) While detailing the heterogeneous copy plan, Its corresponding performance testing and analysis.