1. A method comprising: selecting one or more data items to be extracted from a backup image, wherein the backup image is stored in a plurality of units of magnetic tape storage, the selecting is based on criteria, and the criteria comprise at least one of a custodian of the one or more data items, or content of the one or more data items; identifying the one or more data items in a mapping, wherein the mapping identifies a target unit of magnetic tape storage among the plurality of units of magnetic tape storage, wherein the target unit of magnetic tape storage comprises the one or more data items, and a respective location in the target unit of magnetic tape storage for each of the one or more data items; and extracting the one or more data items from the backup image, wherein the extracting uses the mapping, the extracting produces one or more extracted data items, and the extracting is performed without restoring the one or more data items; migrating the one or more extracted data items to an ingest interface; and archiving the one or more extracted data items into an archive database, wherein the ingest interface is configured to perform the archiving.