Our automated backup is failing. When I try to create a backup manually I get the error message below which refers to media families. The SQL server is 2008 standard (version 10.0.2714.0 according to the properites window). It is running in a virtual environment. Automated backup was crteated using the maintenance plan wizard. By manually I mean from the Tasks | Backup option in Management Studio.
This is the message:
Sysentem.Data.SqlClient.SqlError: The media loaded on "F:\Backup\Links of London\Links of London_backup_2012_03_23_060000_8777321.trn" is formatted to support 1 media families, but 2 media families are expected according to the backup device specification. (Microsoft.SqlServer.Smo)