My org was brought into a small office running Zimbra and I'm getting familiar with it, but would greatly appreciate some experienced oversight in my migration plans that I've pulled together from various docs on the wiki. We're pretty far behind and I'll be doing bare metal backups before I do anything, but if I don't need to use those, that'd be peachy. :-)

The current server:
32-bit aging Dell server
CentOS 5
Release 6.0.6_GA_2330.RHEL5_20100505191632 CentOS5 NETWORK edition.

The ideal target: (I could be convinced to go CentOS, just a preference.)
64-bit VMWare Virtual Machine
Ubuntu Server 12.04 LTS
Zimbra 8.0.5

  1. Upgrade current server to 7.2.5
  2. Build an interim Ubuntu 10.04 LTS server with a virtual drive dedicated to /opt
  3. Install 7.2.5 on the interim server (VM)
  4. rsync /opt from current server to interim server and re-run the installer
  5. Shutdown current server
  6. Fix all the problems
  7. Install Ubuntu 12.04 LTS onto a final server (VM)
  8. Snapshot the /opt virtual drive
  9. Shutdown the interim server
  10. Disconnect the /opt virtual drive and attach it to the final server
  11. Install Zimbra 8.0.5 on the final server
  12. Fix all the problems

Any crazyness in that plan or even just cautions? Thanks!

Gladys: That's the...
Dwayne: The Depelter Turbo. Prepare for a lot of stinging.