How to upgrade RHEL 5.5 to RHEL 6/7?

I am new to Linux and i have to upgrade my product servers to RHEL6/7. Current Linux version in production is RHEL 5.5 (Tikanga). Can some one suggest me which version to upgrade 6 OR 7? and will it be possible to upgrade from 5.5 to 6/7?

Thanks in advance


Hi Once look at the below link.

Insert the RHEL 6.0 64 bit DVD into the drive or use an USB disk that has the image of 64 bit OS.
We will get the options to do a fresh installation or upgrade to another RHEL version.Custom essay writing service are giving the guidelines about the essay writing for academic work. Every students can perform very well in essay writing , assignment , book report and some other task.