IGI takes the core software from three main release distributions gLite 3.2, EMI and UMD.
IGI Release is created starting from the main releases (glite 3.2, EMI, UMD) services enhancing some of them with more features useful for the IGI sites and simplifying their installation and configuration.
IGI provides all the software from two mirrors, the main in Padova and the backup in Bologna. For more details have a look at Repositoy Specitication
IGI (based on EMI/UMD release) Installation and Configuration