I am having an issue with my exchange backup.
I use tdp for exchange . My exchange DAG is a cluster of 2 mbx servers. The total of the databases are supposed to be less than 5 terrabytes.
When Watching my tsm reports, I have noticed that the size of my DAG backups is around 9 terrabytes wile I do daily incremental backups and I only keep one version of each backups!
I also noticed that the preferDAGpassive option is set to false? Do I backup twice the dabases?? Whats the best practice, please I am lost. whats the real meaning of preferdagpassive?