title: where are the logs stored in TFS2017
body: <p>I've installed TFS 2017 in Windows server 2016. I just want to know the following</p>
  
  <ol>
  <li>where are the installation logs stored in server?</li>
  <li>Where are the transaction/history logs stored in server?</li>
  </ol>
  
  <p>Correct me if am wrong, is it possible to backup history of logs and attach to TFS upgrade [in case of TFS version upgrade]?</p>