Windows Server Backup 2012r2 and Number of Copies it Retains

I am currently using the Windows Server Backup feature for Server 2012r2.  I do like the product, but it only keeps 5 copies.  How can I extend this to retain more copies.  I would like to keep 14 to 30 copies.

Currently set to nightly full backups to an external USB drive. I have attached the screenshot.
Windows Server Backup Screenshot
Dan SheridanSenior System Eng / vITMAsked:
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Cliff GaliherCommented:
Windows built in backup has no media retention policies. It deletes old backups to make room for new ones based on an internal logic that detects historical size and change. So the five copies is t hard coded, nor is it a setting configured. It is just how many backups windows things can fit on that drive safely. If you want more specific control, you have to go third-party.

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Dan SheridanSenior System Eng / vITMAuthor Commented:
That's what I was afraid of.  Thanks for the information.
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Windows Server 2012

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