Tape drive data reclamation

A computer program product for copying data from source media to target media in a storage system, the computer program product comprising:

• a computer-readable storage medium having program instructions embodied therewith, wherein the computer readable storage medium is not a transitory signal per se, the program instructions executable by a computer to cause the computer to perform a method, comprising:
• setting a predetermined flag on data to be copied from a primary storage tier and a secondary storage tier, by a node in a computer system;
• identifying, by the node, migrated data being a first portion of the flagged data in a migrated state stored on the secondary storage tier;
• recalling, by the node, the flagged migrated data from the secondary storage tier to the primary storage tier in one or more segments;
• and
• migrating, by node, the one or more segments of recalled migrated data from the primary storage tier to the target medium.

A system for copying data from source media to target media in a storage system, the system comprising:

• a computer system comprising, a processor, a computer readable storage medium, and program instructions stored on the computer readable storage medium being executable by the processor to cause the computer system to:
• set a predetermined flag on data to be copied from a primary storage tier and a secondary storage tier, by a node in a computer system;
• identify, by the node, migrated data being a first portion of the flagged data in a migrated state stored on the secondary storage tier;
• recall, by the node, the flagged migrated data from the secondary storage tier to the primary storage tier in one or more segments;
• and
• migrate, by node, the one or more segments of recalled migrated data from the primary storage tier to the target medium.