Data selection for multi-phase file-based data migration

A computer program product comprising a non-transitory processor-readable storage medium having stored therein program code of one or more software programs, wherein the program code when executed by at least one processing device causes the at least one processing device to perform steps of:

• determining, for a given time period corresponding to an expected duration of a multi-phase file-based data migration from a source storage system to a destination storage system, predicted write access count metrics for a plurality of files to be migrated as part of the multi-phase file-based data migration;
• selecting, based at least in part on the predicted write access count metrics, a first subset of the plurality of files for migration during a first phase of the multi-phase file-based data migration and a second subset of the plurality of files for migration during a second phase of the multi-phase file-based data migration;
• migrating the selected first subset of the plurality of files during the first phase of the multi-phase file-based data migration;
• and
• migrating the selected second subset of the plurality of files during the second phase of the multi-phase file-based data migration.

A method comprising:

• determining, for a given time period corresponding to an expected duration of a multi-phase file-based data migration from a source storage system to a destination storage system, predicted write access count metrics for a plurality of files to be migrated as part of the multi-phase file-based data migration;
• selecting, based at least in part on the predicted write access count metrics, a first subset of the plurality of files for migration during a first phase of the multi-phase file-based data migration and a second subset of the plurality of files for migration during a second phase of the multi-phase file-based data migration;
• migrating the selected first subset of the plurality of files during the first phase of the multi-phase file-based data migration;
• and
• migrating the selected second subset of the plurality of files during the second phase of the multi-phase file-based data migration;
• wherein the method is performed by at least one processing device comprising a processor coupled to a memory.