Hi All We are using UCS boot-from-san using the traditional 4 WWPN search order;Primary HBA( VHBA0) , Primary WWPNPrimary HBA( VHBA0) , Secondary WWPNSecondary HBA( VHBA1) , Primary WWPNSecondary HBA( VHBA1) , Secondary WWPN All seems to work well. (...