Nice article and interesting read. As an intro to powershell I can see the use for it. As Sean has stated though - I would rather the jobs to backup the databases be done through SQL Agent at a minimum. Knowing the history of the backup jobs is essential. Being able to see backup size from a central location is also nice to have for trending purposes.
Jason...AKA CirqueDeSQLeil
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I have given a name to my pain...MCM SQL Server, MVP
SQL RNNR
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