Migrating to mmbackup from IBM Storage Protect-interface–based backup
File systems that are backed up using the IBM Storage Protect interface can be converted to use the mmbackup command to take advantage of the performance offered by mmbackup fast scan technology.
A full backup is not required or necessary when moving from backup using the IBM Storage Protect interface to the mmbackup command.
The mmbackup command uses one or more shadow database files to determine changes in the file system. To convert from the IBM Storage Protect interface backup to mmbackup, one must create the shadow database file or files by using the --rebuild option of mmbackup. The rebuild option queries the existing IBM Storage Protect server or servers and creates a shadow database of the files currently backed up in IBM Storage Protect. After the shadow database file or files are generated, mmbackup can be used for all future incremental or full backups.