A system and method for peer-to-peer grid based autonomic and probabilistic on-demand trackless backup and restore are disclosed. The on-demand trackless backup-restore system includes a plurality of nodes connected to a network communications channel. The plurality of nodes in the on-demand trackless backup-restore system includes at least one node that is a source client configured to initiate a trackless data backup-restore request and includes one or more nodes that are target clients configured to perform the trackless data backup-restore request. Further, the source client in the on-demand trackless backup-restore system is configured to establish direct connections with one or more of the target clients that are available to perform the trackless data backup-restore request.