Patent ID: 8682862
Filing Date: 2014-03-25
Classification: G06F

Abstract:
1. A method for retrieving a logical data unit stored within a deduplicated disk image residing on a backup storage device without restoring the entire deduplicated disk image, comprising: receiving a request for at least one deduplicated disk image residing on a backup storage device; identifying the at least one deduplicated disk image residing on the backup storage device based on information contained within an index file, which is indicative of a logical organization of the backup storage device; mounting the at least one deduplicated disk image; receiving a request for at least one logical data unit stored within the at least one deduplicated disk image; identifying a portion of the at least one deduplicated disk image that corresponds to the at least one requested logical data unit without restoring the entire at least one deduplicated disk image; restoring only the portion of the at least one deduplicated disk image; and transferring the requested at least one logical data unit to a recipient, wherein the portion of the at least one deduplicated disk image that corresponds to the at least one requested logical data unit is made up of one or more data blocks, wherein a file name of each data block is a hash value of the contents of each data block, and wherein a map file stores a name of each data block.