I'm looking for a solution to implement replication cross over multiple country, and read the following statement in the overview document, is it ready?
Future: Native Replication. Zimbra clustering can be characterized as “single copy” failover in the sense that, from perspective of ZCS, there is only a single disk image to worry about (RAID mirroring is hidden to Zimbra). The Zimbra Collaboration Suite will in the future also provides “dual copy” failover that does not rely on underlying shared disk. ZCS native replication is likely the better fit for failover across a WAN, such as for multi-site disaster recovery wherein shared network attached storage may be infeasible. Zimbra replication is also well suited to commodity server and storage hardware.