How-To Change Qlogic/Emulex HBA Connection Option in XenServer

How to set the connection option to Point-to-Point only?

For Qlogic HBA - http://support.citrix.com/article/CTX130465

For Emulex HBA - Edit /etc/modprobe.d/emulex and add:

options lpfc lpfc_topology=0x2

Complete guide to set the connection mode in Emulex HBA can be found at - http://support.citrix.com/article/CTX134088