you can only present a LUN to multiple hosts if there is some kind clustering involved (MS Clustering or Veritas)
Sorry for asking a silly question.  There is a request by the System Administrator to assign the same LUN to two different Windows Hosts running IIS.  From my understanding, it is not feasible.  On the other hand, ESX Hosts can share LUNs in the cluster.  I just wonder in what circumstances will we assign the same LUN to different Windows Hosts (Like Clustering) ?  Thanks 
In what circumstances can we assign a LUN to multiple hosts ?