Patent ID: 7428613

Claim:
A system of partitioned library mapping, comprising: a media library comprising: a plurality of data transport elements; and a media changer; a plurality of controllers, each controller connected to a data transport element of the media library, wherein each controller: presents a media library partition; receives a command from a host application directed to the media changer based on the media library partition, wherein the command references a logical address; forwards the command for prioritization; receives data; and forwards the received data to the data transport element; and a second controller connected to the media changer of the media library and each of the controllers, wherein the second controller: receives commands from the plurality of controllers; translates logical addresses in the commands to corresponding physical addresses based on media library partitions presented by the plurality of controllers; prioritizes the commands; and forwards the commands with the physical addresses to the media changer in accordance with the prioritization of the commands.