Suggestion about updating

Hi all, I have a

  • zimbra Release 8.0.7.GA.6021.UBUNTU12.64 UBUNTU12_64 FOSS edition

and, on another host

  • debian 7 (wheezy)
  • z-push: 2.2.2-1981
  • zimbra back-end: 63

I wish to upgrade z-push and the back-end.
Z-push isn’t installed by repositories yet.

How do you recommend to proceed?

You really should not be running anything as old as zimbra 8.0.7 - there are so many security fixes and bug fixes that have gone into zimbra since then.

How many clients are syncing to the server?