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Full database backup takes so long

Posted By:      Posted Date: September 10, 2010    Points: 0   Category :Sql Server
Today several full database backups took so long. Normally it took 2 hours to backup. But today the 5 backups didn't finish by the end of the work day. The backups went well until yesterday. I don't know what happened overnight. Is there a performance tool embedded in SQL Server? How can I find out why the backups take so long? What could be the possible reasons? Thank you,  

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