Date: Mar 2009
Product & Version: NVBU 8.x
OS Version: Any
Module & Version: Exchange Server APM 4.0.10
After an upgrade of the Exchange Server APM to 4.0.10, the duplication phase of a backup job uses too many tapes or sits "waiting for media".
1) edit the job and navigate to the advanced options tab.
2) make sure that under the duplication phase, the "allow streams to share media" option is selected.
Exchange server APM 4.0.10 creates "multistream backups" which try to allocate a new piece of media for each "stream" if the above option was not selected. This was not the behaviour in earlier versions.