一种高性能阵列架构研究

Research about a New Architecture of High-performance Disk Array

现今的应用程序需要更可靠的数据存储。到目前为止,数据存储的可靠性都是依靠不同的RAID级别来保证数据的可靠性,一般采用5个RAID级别[12]中的一种。存储方面的数据已经很明显地增长了,但是磁盘的可靠性并没有多大的改善。所以,为了控制存储的成本,有必要提供多元化的存储。在现有系统中加入新的RAID代码需要大量的开发、测试和调试工作,从成本上来讲是不现实的。因此,提出了一种新的通用RAID架构,此架构是基于异或的纠删码的,并将任意扇区和磁盘故障的组合作为基础,因而具有通用性。

Current applications need more reliable data storage. Present day we use one of five commonly available RAID levels to protect against data loss due to media or disk failures. Data storage has been very significant growth, but the reliability of disk is not much improvement. Therefore, in order to control the storage cost,it is necessary to provide a wide range of storage. Adding a new RAID code in the existing system requires a large amount of development, testing and debugging work, such is unrealistic in terms of cost. Therefore,we proposed a new common RAID architecture,the architecture is based on XOR based erasure （RAID） code, and makes arbitrary sector and the combination of disk fai- lure as a basis,so it is universal.