Patent ID: 7747830
Filing Date: 2010-06-29
Classification: G06F

Abstract:
1. A method executed in a system comprising a backup server, an array controller and an agent on a host, the method comprising: a. the backup server preparing for a backup process in cooperation with the agent; b. the agent collecting information regarding target data for backup processing; c. the backup server issuing a command to define a time point of a snapshot with an indication of a target of the snapshot; d. the array controller receiving the command; e. the array controller specifying a target of the snapshot by referring the command; f. the array controller making a marker to take the snapshot based on the command; g. the array controller detecting the marker in updating a base volume with a journal; h. the array controller checking the information in the marker and performing the backup processing according to a type of the marker; i. if the type of the marker corresponds to a snapshot, performing the backup processing using the snapshot; j. if the type of the marker corresponds to quiescence, performing the backup processing using a quiescent image; and k. if the marker is of another type, performing a process intended by the marker, wherein the backup processing using the snapshot comprises: