Dynamic Address Mapping Virtualization Storage System

There are two problems in static storage resource management that its storage resource utilization is inefficient and it can not meet the requirements of multiple-class applications.This paper designs and implements a virtual storage system named ASD(Allocate-on-demand Storage Device) to solve the problems,which uses the allocate-on-demand policy to relieve the problem of underutilization of storage resource,and uses the dynamic mapping mechanism to manage storage resource in accordance with the access characteristics of applications.The results of test indicate that,compared with the static management method,the performance and resource utilization of Linux ext2 file system based on ASD platform has distinguished improvement.