Normal—Backs up the files you select, and marks the files as backed up.

Incremental—Backs up the files that changed since the last backup, and marks the files as backed up.

Differential—Backs up the files that changed since the last backup, but doesn’t mark the files as backed up.

Copy—Backs up the files you select, but doesn’t mark the files as backed up.

Daily—Backs up the files that changed that day, but doesn’t mark the files as backed up.