title: Getting Host-Guid from Exchange-ID/Name in Exchange Server 2010
body: <p>I am getting list of all the exchange-servers from command <code>'Get-ExchangeServer'</code>. 
  From this server-name I want to get Host-Guid (not exchange-guid). 
  Any idea how can I get this information?</p>
  
  <p>Is Exchange-Server-Name and Host Name is always same or it can be different?</p>