public ClientCacheFactory setPoolSubscriptionRedundancy(int redundancy) {
    getPoolFactory().setSubscriptionRedundancy(redundancy);
    return this;
  }
Sets the redundancy level for this pools server-to-client subscriptions. If <code>0</code> then
no redundant copies will be kept on the servers. Otherwise an effort will be made to maintain
the requested number of copies of the server-to-client subscriptions. At most one copy per
server will be made up to the requested level.

@param redundancy the number of redundant servers for this client's subscriptions.
@return a reference to <code>this</code>
@throws IllegalArgumentException if <code>redundancyLevel</code> is less than <code>-1</code>.
geode-core/src/main/java/org/apache/geode/cache/client/ClientCacheFactory.java