Thursday, September 24, 2009

Sun Directory Server 5.2 Replication over WAN

The Philippines customer that I talked about in my previous post has 2 different version of Sun Java System Directory Server running in their 3 sites - 5.1 and 5.2. The key point is it is a replication over the WAN which makes the configuration challenging.

I made a verification and found that over LAN, replication between 5.1 and 5.2 is supported.

However, do note the following if replication is over the WAN:

Multi-master replication (MMR) over Wide Area Networks (WAN) is a new feature of Sun ONE Directory Server 5.2 that will allow for MMR configurations across geographical boundaries in international, multiple data-center deployments.

Due to differences in protocol, multi-master replication over WAN is not backward compatible with previous releases of Directory Server. As a result, in a multi-master replication over WAN configuration, all Directory Server instances separated by a WAN must be 5.2 instances.

Imagine what will happen if I did not conduct the feasibility study ... I'll be banging my heads when I fly in on-site only to discover that I have under-quoted the effort ... Ha!

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