计算机的发展,对信息的存储技术提出了更高的要求。但是磁盘的I/0性能始终成为提升的瓶颈。为了解决这一问题,提出了RAID阵列。RAID阵列采用数据分块技术,在多个磁盘上交叉存储使得多盘可平行操作,I/0响应时间得到改善,同时利用冗余容错技术,极大提高了磁盘阵列的可靠性和安全性。 Computer development, the storage of information technology put forward higher requirements. However, disk I / O performance has always been a bottleneck for improvement. To solve this problem, a RAID array is proposed. The RAID array uses data blocking technology to cross-store on multiple disks so that multiple disks can operate in parallel and the I / O response time is improved. At the same time, redundancy and fault tolerance are used to greatly improve the reliability and security of disk arrays.