If you need additional capacity beyond what the standard deployment provides, choose from these two options:
Vertical scaling - Add more memory and CPUs to your nodes. This is the suggested method or scaling as it does not require the additional complexity of managing more nodes.
Horizontal scaling - Add more nodes to your cluster. While this allows you to scale as much as needed, it involves managing additional nodes.
IMPORTANT:You must always have an odd number of nodes in your cluster.