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If you back up and migrate files to the same server, you can restore migrated files using one of the following methods:
Set the restoremigstate option to no in your dsm.opt file. The file becomes a resident file. The migrated copy of your file is removed from TSM storage when it expires. Specify the expiration with the migfileexpiration option in your dsm.sys file.
Set the restoremigstate option to yes in your dsm.opt file.
For AIX GPFS file systems only: Files with ACLs are restored to a resident state, even when you specify restoremigstate yes.
If a backup version of a migrated file does not exist, you cannot use the backup-archive client to restore a stub file for that file. To recreate a stub file for a migrated file, use the dsmmigundelete command.
For more information about these options, see Migfileexpiration and Restoremigstate.
If you back up files to one server and migrate them to a different server, use one of the following methods to restore your migrated files:
Use the dsmmigundelete command. If a migrated copy of your file exists in storage, the migrated copy of the file is removed from storage when it expires. The file becomes a resident file. Specify the expiration with the migfileexpiration option in your dsm.sys file.