Merge pull request #2517 from chrissie926/patch-4

Update service-fabric-cluster-manifest.md

Author: tynevi

articles/service-fabric/service-fabric-cluster-manifest.md

@@ -20,7 +20,8 @@ ms.author: dekapur
 # Configuration settings for standalone Windows cluster
 This article describes how to configure a standalone Service Fabric cluster using the ***ClusterConfig.JSON*** file. You can use this file to specify information such as the Service Fabric nodes and their IP addresses, different types of nodes on the cluster, the security configurations as well as the network topology in terms of fault/upgrade domains, for your standalone cluster.
 
-When you [download the standalone Service Fabric package](service-fabric-cluster-creation-for-windows-server.md#downloadpackage), a few samples of the ClusterConfig.JSON file are downloaded to your work machine. The samples having *DevCluster* in their names will help you create a cluster with all three nodes on the same machine, like logical nodes. Out of these, at least one node must be marked as a primary node. This cluster is useful for a development or test environment and is not supported as a production cluster. The samples having *MultiMachine* in their names, will help you create a production quality cluster, with each node on a separate machine.
+When you [download the standalone Service Fabric package](service-fabric-cluster-creation-for-windows-server.md#downloadpackage), a few samples of the ClusterConfig.JSON file are downloaded to your work machine. The samples having *DevCluster* in their names will help you create a cluster with all three nodes on the same machine, like logical nodes. Out of these, at least one node must be marked as a primary node. This cluster is useful for a development or test environment and is not supported as a production cluster. The samples having *MultiMachine* in their names, will help you create a production quality cluster, with each node on a separate machine. The number of primary nodes for these clusters will be based on the [reliability level](#reliability). In release 5.7 API Version 05-2017, we removed the reliability level property. Instead, our code is calculating the most optimized reliability level for your cluster. Please do not use this property in 5.7 and later code version.
+
 
 1. *ClusterConfig.Unsecure.DevCluster.JSON* and *ClusterConfig.Unsecure.MultiMachine.JSON* show how to create an unsecured test or production cluster respectively. 
 2. *ClusterConfig.Windows.DevCluster.JSON* and  *ClusterConfig.Windows.MultiMachine.JSON* show how to create test or production cluster, secured using [Windows security](service-fabric-windows-cluster-windows-security.md).