Apparatus and support method for state restoration

Abstract

A storing unit stores therein information indicating a chronological order of a plurality of states of an apparatus; information indicating an amount of time needed to execute each of a plurality of commands, causing a forward or backward transition between two of the states; and information indicating an amount of time needed for restoration to, among the states, each state for which a snapshot has been taken, using the snapshot. Based on the information stored in the storing unit, a calculating unit calculates shortest operation paths, each for restoring the apparatus from a restoration origin state to one of the remaining states, and determines one or more snapshots not used in any of the shortest operation paths as deletion targets.

Dependencies are inferred from the claim text.