When installing MOSS in an 2008R2 environment, you will notice that the Best Practices Analyser for Sharepoint will not run.. now this is not only to the fact that the BPA is running on the 2008R2 environment, it’s when the entire sharepoint farm is running on 2008R2. One option is to have a single 2008/2003 server on the same farm and point to that, or wait for the next release of BPA for Sharepoint.
The error received would be: Failed to retrieve the configuration database connection string from machine ‘<insert machinename>’ due to the following error: Failed to retrieve the configuration database connection string from machine ‘<insert machinename>’