Scheduled backup didn't run

I am a new user to SSR13 (formerly a long time user of Backup Exec).  I scheduled a backup to run last night, and it didn't run.  It is now saying it will run tonight.  Everything seems to be in order.  I can't find any error messages anywhere.

Also - can you tell me what (if anything) I need to do to ensure backups are suitable for a disaster recovery restore?  It is unclear to me as to whether or not these backups are image backups that could do a full restore, or whether or not there might be issues due to open files at the time of the backupi.