Protect DPM Database Error This item cannot be protected ID31008

Problem
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This item cannot be protected because some prerequisite software is missing. Ensure that all prerequisite software is installed and then protect this item. (ID: 31008)

Analyze
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C:\Program Files\Microsoft DPM\DPM\bin> CheckPrerequisites.exe verbose <Agent Server Name>

執行了SQL Server Query的命令語句

SELECT @@VERSION

您將會得到如下列的結果

Solution
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Microsoft SQL Server 2005 Express Edition Service Pack 2
https://www.microsoft.com/downloads/details.aspx?familyid=31711D5D-725C-4AFA-9D65-E4465CDFF1E7&displaylang=en

更新SP2後 ,即正常備份.