You can use a spreadsheet to calculate retention. Click here to download the spreadsheet, and then enter your data into the spreadsheet.
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Open the spreadsheet.
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Enter the appropriate data in the Input section that is highlighted in yellow.
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Days: The number of days defined in the storage policy.
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Cycles: The number of cycles defined in the storage policy.
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Days Between Fulls: The number of days that fall between the full backup operations in the storage policy.
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Enter the number of extra days in the Extra Days field in the Illustration section to see how retention is affected.
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Enter 0 to display the maximum number of ageable days.
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Enter 1 to add an additional day and display the minimum number of ageable days.
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Enter 2 to add two additional days and so on.
In the Illustration section of the spreadsheet, you can see when the data will be aged.
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