VMware Migration from 4.0 to 5.0

Please find the video url for the Migration of VMware

ESX upgrade from 4.0 to 5.0:- http://www.youtube.com/watch?v=GLDidY_Mjl8
Vcenter upgrade from 4.1 to 5.0 : http://www.youtube.com/watch?v=ZBR9oxBkWe8

http://www.sysadmintutorials.com/tutorials/vmware-vsphere-5-x/vcenter-5-x/update-manager/esxi-4-upgrade-to-esxi-5-using-update-manager/

http://blog.vmpros.nl/2011/07/13/vmware-easy-upgrade-esxi-4-1-to-esxi-5-0/

troubleshooting: http://blog.vmpros.nl/2010/07/15/vmware-failed-to-read-the-upgrade-package-metadata-xml-upgrading-to-esxi-4-1/

http://tech2solution.blogspot.com/2011/09/upgrading-vsphere-40-to-vsphere-50.html