thank you for your contribution, only the migration will be between Windows Server 2008 R2 to Windows 2008serveur all 64 bits.
is that this procedure is valid?
Yes, this is the procedure. Read it carefull and review the other KBs they mention on it. Also it would be fine for you if you have the Product Guide and the Installation Guide. Remember always backup your database before to begin.
"The Upgrade Compatibility tool is new to ePO 5.x. It has two purposes:
- Checks for compatible Extensions before upgrading an existing installation of ePO to 5.x.
- Migrates an existing installation to a new server and upgrades to ePO 5.x simultaneously."
I would second reading the related KB articles and not just relying on the compatibility tool results. When I did this upgrade I found that the upgrade compatibility tool did not flag that GTi Proxy was incompatible with 5.3. It was only after reading the KB articles that I found that McAfee had withdrawn support for it after the 5.3 compatibility tool had been published. You might find some hidden "gotcha's" in the KB article that relates to your environment too. I'm sure you've already seen it but make sure you read and action KB66616 too.