This is a interesting topic, I want know a little bit more.
Some third party backup tools actually has features like SQl server database backup, it sounds like the backup is taken from the database rather than a filesystem file copy. This may raise issues when there are also SQL Server scheduled backup jobs,
For example, the third party tool weekly full backup and daily differential backup, if there is a SQL Server job full backup the database every day, is the SQL Server jobs affect the daily differential backups?