Allo all

Being a tad new here I would like to ask the following.
I currantly run Zimbra 7.1.2_GA_3268 (build 20110804130756) on SLES 32 here, we are moving to RHEL and I want too move zimbra over. Will be installing: zcs-7.1.2_GA_3268.RHEL6_64.20110804131406.
Mail, settings accounts the lot, to the end user it must be seemless.

Any pointers @ doc's or personal experiences?