OS upgrade from RHEL4.4 to RHEL4.8

view story

http://www.linuxquestions.org – I have task in hand , there are few servers running RHEL4.4 I am required to upgrade them to RHEL4.8 I have a standby server having repos(rpms) of rhel4.8.What would be most reliable method to upgrade rhel4.4 server to rhel4.8 and most viable technique to rollback if required. Thanks in advance . Regards. Pragul (HowTos)