I currently have ZImbra 4.5 running in my environment.
One mailbox server and 3 mtas.
I want to upgrade to Zimbra 5 open source edition
I also need another box running Zimbra 5 Network Edition for my management staff so they can use Zsync.
I have tested the Zsync and it works fine

Is it possible to cluster Zimbra 5 OS and Zimbra 5 NE?
Please, this is urgent. I need to submit a report to management within the next 3 hours.
Thanx
