Exchange > 2013
cd $env:exchangeinstallpath\bin
Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataON /PrepareAllDomainsExchage 2013
cd $env:exchangeinstallpath\bin
Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareAllDomains Exchange > 2013
cd $env:exchangeinstallpath\bin
Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataON /PrepareAllDomainsExchage 2013
cd $env:exchangeinstallpath\bin
Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareAllDomains