Data redundancy protection double-hard-disk system based on software RAID

The invention provides a data redundancy protection double-hard-disk system based on a software RAID (Redundant Array of Independent Disks). The system comprises a software RAID controller and an MD module, the MD module supported by a linux kernel is adopted, the MD module manages software RAID controller equipment at a bottom layer and provides an application program tool mdadm at an application layer, and the mdadm is used for constructing, managing and monitoring the MD equipment. According to the data redundancy protection double-hard-disk system based on the software RAID, the existing storage server can improve the system operation reliability of the storage controller under the condition that the space structure and the cost of the RAID controller are not considered. 本发明提供了一种基于软件RAID的数据冗余保护双硬盘系统。该系统包括：软件RAID控制器及MD模块，采用linux内核支持的MD模块，MD模块在底层管理软件RAID控制器设备，并且在应用层提供应用程序工具mdadm，mdadm用于构建、管理和监视MD设备。本发明提供的基于软件RAID的数据冗余保护双硬盘系统使现存的存储服务器也能够在不考虑空间结构的和RAID控制器成本的情况下对存储控制器的系统运行可靠性进行提高。