Storage system and method for acquisition and utilization of snapshots

摘要

A computer system including: disk array system to cause a snapshot corresponding to the selected backup time accessible with the specific address to which the computer can access; wherein if the snapshot corresponding to the selected backup time is associated with the specific address to which the computer cannot access, then the disk array system making the snapshot accessible with an address to which the computer can access; and wherein the snapshot relates to differential data between initial backup data and actual backup data at the selected backup time, thereby an acquisition time of the snapshot is different than the selected backup time corresponding to the specific address that can be accessed initially by the computer.