Couchbase Server Construction

I try to use the check being Couchbase.
And to configure the two clusters in a server.
Q1: conforms to the Couchbase?
Q2: XDCR possible to use this configuration?
Q3: Are there other ways for ensuring availability not appropriate?

Server#1 Server#2 Server#3 Server#4
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ClusterA ClusterA ClusterA ClusterA

ClusterB ClusterB ClusterB ClusterB
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Hi Wonmin,

I’m afraid your question(s) aren’t very clear to me - could you perhaps expand / rephrase what you are asking?