A method that is performed for backing up data. The method includes obtaining an incremental backup request; and in response to the incremental backup request: obtaining an asset and an asset entry associated with the incremental backup request; dividing the asset into pseudo-assets based on the asset entry; storing the pseudo-assets across backup storages to generate incremental pseudo-asset backups; initiating the merging of the incremental pseudo-asset backups to generate an incremental asset backup; and initiating the merging of the incremental asset backup with a previously generated full asset backup associated with the incremental backup request to generate a first synthetic full asset backup.