Hopefully I can get a definative answer on this, I thought I asked the question before but I cannot find it in the forums....
Here is the Zimbra (FOSS) Version History for those who dont know:
M2, M3, M3 Update, M3 Update 2
3.0.0, 3.0.1, 3.1, 3.1.1, 3.1.2, 3.1.3, 3.1.4
4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.5
4.5.0, 4.5.1, 4.5.2, 4.5.3, 4.5.4
4.5.4, 4.5.5, 4.5.6, 4.5.7, 4.5.8, 4.5.9, 4.5.10
What I want to know is (for the record) What major revisions are stepping stones to upgrade to the newest version.
I am running 3.0.1 and I have been waiting for a reliable way to backup before I upgrade. Now that the Wiki Has one, and I have purchased backup hard drives for my server I am ready to go.
In the past I have been told (I cant remember who told me) but that the safest way from 3.0.1 to present was:
3.0.1 -> 3.1.0 -> 4.0.1 -> 4.5.0 -> 4.5.5
(do any operating system updates here)
then (new OS)+4.5.5 -> 4.5.10 -> 5.0.1 -> (Whatever comes next)
I have seen and read horror stories of 3.x -> 4.5x, etc.
What I want is a Zimbra employee sanctioned "safest way" (best practices)
way of going from 3.0.0 to current.
This will be beneficial for others also because it will also help any others who are in any of those "gaps" to know the "best practices" way to get to current FOSS. Besides at 200 - 300 MB per package thats alot of downloading, I dont mind doing it, I just want the SAFEST upgrade route, for smooth upgrading.