Research On The Grid Storage Model Based On Hybird P2P

Grid is a kind of the Technology that using high-speed Internet on a broad geographical-distributed of various resources,including computing resources,storage resources,bandwidth resources, software resources,data resources,information resources,knowledge resources,as a logical Whole thing,just as a supercomputer as to provide users with the integration services of information and application.With the computer technology and Internet development,there are large number of idle nodes appeared on the net.In which effective and reliable way to be able to use the remaining resources of the idle nodes is a hot research topic in recently years.First,this paper discusses and summarizes the development and actuality of distributed storage systems.Based on systematically analyzing and summarizing the relevant works on peer-to-peer technology,it designs a Hybrid P2P based distributed storage system. Organizes large numbers of nodes distributed in Internet into a united overlay network.The system divide into three kinds of node,there are server node,super node and general node.Combined with the haracteristics of hot documents and super-node,we modify the original square-root replication strategy,and then present a new mixed-type replication of backup strategy.That is,using the square-root replication in the general node as the backup strategy;and using the RAID technology based on the hot-spot document in the super-node.Simulation test proved that the premise of maintaining the same availability, compared with the original strategy,the mixed-type replication of backup strategy can be more effective in saving the limited resources in cyberspace.