Interesting question: how can we know the difference between a native backup and backup taken by third party tool? Say you have started newly in a enterprise wide platform and your task is to find out what methods of BACKUP and RESTORE are followed to take care of data which is a prime task for every DBA. Usage of third party tools has been increased since last few years to take advantage and flexibility from SQL Server. This is good upto some extent where the tailor-made features are not available...(
read more)
Read the complete post at http://sqlserver-qa.net/blogs/tools/archive/2007/10/23/how-to-find-whether-backup-is-performed-using-sql-native-methods-or-third-party-tools.aspx