We have been using Zimbra 6 (ZCS 6.0.5) on a server with Ubuntu 8.04 LTS (32 bit). Yesterday night this server crashed (hardware issue).
We are moving now to a new server, and I thought it could be the opportunity to upgrade to Ubuntu 10.4 LTS (64 bit) and ZCS 7.0. We have a full backup of the former install (with all datas).
But I don't know if I can do this directly (install Ubuntu 10.4, then ZCS 7.0, then restore), or if I have to reinstall ZCS 6 on Ubuntu 8.04, then restore datas, then upgrade OS and ZCS.
Anyone who can help ?