N/A
When a job starts outside the backup time window by manual operation or Error-Handling Rules, the schedule does not affect to the backup job instance.
Disable resuming or restarting option in Error-Handling Rules if the backup time window is critical to the production system.
Note: The following conditions are enabled by default to resume the job in Error-Handling Rules
1. Checkpoint Restart
There is a job property to enable Checkpoint Restart in addition to Error-Handling Rule. The job property is disabled by default.
2. Recovered Job
If the server is in the hang up status or shutdown status in a long term and the job is running at the time, the job may resume at unexpected times.
Error-Handling Rules can be configured from Backup Exec icon > [Configuration and Settings] > [Error-Handling Rules] (Figure 2)
Figure 2.

This job will start at 9 PM at the latest, and will be canceled at 10 PM if the job is still running.