My backups are larger than I expected. Doesn’t File Backup use VSS to make the incremental backups small, like in Complete PC Backup?
Complete PC and File Backup are very different in terms of how they make use of VSS. File Backup creates a shadow copy (also known as a snapshot) using VSS to make sure that all opened files are flushed from memory to the file system. Once this is done, File Backup reads the files from the snapshot and places them in a zip file. The zip file will contain complete files from both a full and incremental backups, so this is why the zip file is larger than you might expect.
