Certain files are always excluded from migration. These files include system files, shared libraries, and all executables and data files used by Backup. The following files are excluded from migration:
All files in the /, /usr, /opt, and /var filesystems
All files that end with .so
All files (executables and data files) used by Backup
Files that are larger than 2 GB
Additionally, you can choose certain files or groups of files to exclude from migration. For example, you can exclude files owned by root from automatic migration.