title: Azure Service Fabric cost calculation, nodes vs instances
body: <p>I've been trying to establish the cost of running as standard 5-instance Service Fabric cluster.</p>
  
  <p>I am using Azure Pricing Calculator and it talks about Scale Sets. </p>
  
  <p>What is a 'scale set'? Does one scale set include 5 instances or do I need 5 scale sets for a 5 instance cluster?</p>
  
  <p>(By default the calculator adds three scale sets.)</p>