I am doing disk image backup nightly of a Windows 2008 R2 server. it is supposed to overwrite oldest backups but it is not. Backups are failing because the disk is full. Another identical server has no problem.
Now I cannot even delete old backup jobs.
1. When I use wbadmin Delete Systemstatebackup command, I get the error:
"This command can be used to delete backups that only contain the system state."
2. When I use vssadmin delete shadows /For=E: /Oldest and similar commands, I get the error:
"Snapshots were found, but they were outside of your allowed context."
I have checked and rechecked my syntax for both commands and have tried to delete oldest or a specific job by ID, but nothing works.