I am just setting up first installation of Zimbra. It should be pretty small, up to 100 users, mostly for remote POP3 clients access. I am using 32b Debian Etch package inside Xen guest because 64b Zimbra for Etch is not available.
How difficult it would be to migrate data (with reasonable downtime eg. up to one hour) to another Zimbra installation if I will change the OS later (Ubuntu Hardy or Debian 64b Etch)?
Thanks a lot.