Replicator and cluster replicator task

125 pts.
Tags:
Cluster management
Data Replication
Lotus Domino
Microsoft Windows Server 2003
If two servers are in cluster then does the cluster replicator task run on both the servers or on an single server?

Similarly if we have established replication between servers, does the replicator task run on single or both the servers???



Software/Hardware used:
windows 2003

Answer Wiki

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The answer to both questions is – it depends. Generally, it is best to have one server manage the replication (IMHO) but some prefer both servers do it, each doing a push only replication.

To me, in a cluster situation, generally one server is there only for failover anyway and is not likely doing too much. So having it do a pull/push replication (thus using its resources for the activity) is best and not having the production server do anything.

The key, I guess, is that the server the initiates the replication does the work. So if, in either configuration, you have one server with a smaller load, it is likely best to have it do all of the replication.

I should mention that clustered boxes do not have to use the cluster replicators. So if they are connected via a WAN for some reason, just use regular replication on a short schedule instead – it is more efficient. Cluster replicators are very active. It is also possible to have just some databases use cluster replication and others use normal replication. It is actually recommended you have a regular replication connection configured for clustered boxes for the specific issue that a database may not have cluster replication on, so it will still replicate. Also, the cluster replicator queues activity and is not always immediate anyway – so regular replication fills the gap.

I could write on this subject for hours, if you need more info contact me through my contact info on my website (www.acadiasolutions.com). I am available to assist with Domino admin tasks as well.

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  • Mohit04
    Thanks for the reply.
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