All the file systems being included in the backup,are not being triggered

Hello All,

      I have an issue with the Backup of Cluster Server. There are 22 file systems for each node . All the 22 streams are being triggered for one server. But only 16 streams are being triggered for the other server. This backup is successful. But the 6 streams which have not been started are being triggered at a later time( with a gap of 3 hours) and failing. I would like to know the reason why the 6 streams are not being triggered at the correct time.

Appreciate a quick response. Thanks in Advance