Intel’s instructions are quite complicated and the package contains more files than you need.
Follow these commands, downoad and unpack:

wget 'http://downloadmirror.intel.com/18441/eng/ir3_Linux_x86_RWC2_v13.04.03.01.zip'
unzip ir3_Linux_x86_RWC2_v13.04.03.01.zip 

Check that you have the correct Centos version, should be 5-x:

rpm -qf /etc/redhat-release

Install these requirements before we can launch intel install file:

yum install net-snmp net-snmp-utils --enablerepo=base

Intels .sh file has weird characters in it, lets convert it, chmod it and the run it to install and start services.

tr -d '\15\32' < RunRPM.sh > RunRPM2.sh
chmod 755 RunRPM2.sh 
./RunRPM2.sh

Open up some ports in Xenserver firewall:

lokkit -p 3071:tcp -p 3071:udp -p 5571:tcp -p 5571:udp

Now, you should be able to connect to your server ip from Windows Intel Raid Web Console 2 UI.
At the time of writing that can be found here.