Patent ID: 7206939

Claim:
A file storage system comprising at least one user computer, a storage server connected to said user computer over a network for storing files, and a condense server connected to at least said storage server via the network for generating file fixing guarantee data, (A) said storage server comprising: means for accepting a request for fixing a file status from said at least one user computer; means for generating a request for guaranteeing file fixing in response to said file status fixing request, said file fixing guarantee request being to request file fixing guarantee data for proving a status of the file managed by said storage server at the time of the fixing request to a third party; means for sending said file status fixing guarantee request to said condense server; means for accepting file status fixing guarantee data generated by said condense server in response to said file status fixing guarantee request, said file status fixing guarantee data guaranteeing the status of a fixed file; and means for storing said accepted file status fixing guarantee data so as to associate with said file; (B) said condense server comprising: means for receiving said file status fixing guarantee request, from said storage server; means for generating said file status fixing guarantee data based on said file status fixing guarantee request; and means for sending said generated file status fixing guarantee data to said storage server.