On Mon, May 30, 2016 at 9:10 PM, Julio Brum <brumpaiva(a)gmail.com> wrote:
  Hi,
 I'm with the task of migrating the 4.1.2 version of XWiki to a newer
 version (7.4.3). I know very little about the XWiki, so would some initial
 tips, please. 
You have documentation on
http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Upgrade.
4.1.2 to 7.4.3 should be OK but it all depends:
* what modifications you have on standard pages/templates
* what API you are using (we usually don't delete APIs but you might
need to install something that have been moved as optional extension
for example because it's not maintained anymore or makes more sense as
extension)
* Colibri skin has been removed so either you install it or you move
to Flamingo skin (Flamingo is way better and Colibri might not fully
work on 7.4.3)
Also you might want to look at
http://platform.xwiki.org/xwiki/bin/view/Features/ContentOrganization
since the whole space/page/parent organization changed in 7.2.
 - Can I migrate directly to version 4.1.2 to 7.4.3? What better way to do
 this migration? Any tips? Some tutorial? 
You should look at 
http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Upgrade
 - Currently XWiki is a physical machine. Can I migrate a VM? There are
 known problems in running Xwiki in a virtual machine? 
Should work well.
 - Where are stored the files that users place? In the database or
 filesystem? 
A bit of both. See 
http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Backup.
 Thank you in advance.
 Best regards,
 Julio
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Thomas Mortagne