diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2019-06-01-preview/FailoverManagedInstance.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2019-06-01-preview/FailoverManagedInstance.json
new file mode 100644
index 000000000000..47b4874ad9c2
--- /dev/null
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2019-06-01-preview/FailoverManagedInstance.json
@@ -0,0 +1,113 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "2019-06-01-preview",
+    "title": "SqlManagementClient",
+    "description": "The Azure SQL Database management API provides a RESTful set of web APIs that interact with Azure SQL Database services to manage your databases. The API enables users to create, retrieve, update, and delete databases, servers, and other entities."
+  },
+  "host": "management.azure.com",
+  "schemes": [
+    "https"
+  ],
+  "consumes": [
+    "application/json"
+  ],
+  "produces": [
+    "application/json"
+  ],
+  "security": [
+    {
+      "azure_auth": [
+        "user_impersonation"
+      ]
+    }
+  ],
+  "securityDefinitions": {
+    "azure_auth": {
+      "type": "oauth2",
+      "authorizationUrl": "https://login.microsoftonline.com/common/oauth2/authorize",
+      "flow": "implicit",
+      "description": "Azure Active Directory OAuth2 Flow",
+      "scopes": {
+        "user_impersonation": "impersonate your user account"
+      }
+    }
+  },
+  "paths": {
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Sql/managedInstances/{managedInstanceName}/failover": {
+      "post": {
+        "tags": [
+          "ManagedInstances"
+        ],
+        "description": "Failovers a managed instance.",
+        "operationId": "ManagedInstances_Failover",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v1/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v1/types.json#/parameters/ApiVersionParameter"
+          },
+          {
+            "$ref": "#/parameters/ManagedInstanceNameParameter"
+          },
+          {
+            "name": "replicaType",
+            "in": "query",
+            "description": "The type of replica to be failed over.",
+            "required": false,
+            "type": "string",
+            "enum": [
+              "Primary",
+              "ReadableSecondary"
+            ],
+            "x-ms-enum": {
+              "name": "ReplicaType",
+              "modelAsString": true
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Successfully completed managed instance failover."
+          },
+          "202": {
+            "description": "Managed instance failover is in progress."
+          },
+          "default": {
+            "description": "*** Error Responses: ***\n\n * 400 ManagementServiceFeatureDisabled - User attempted to use a feature which is disabled.\n\n * 400 ManagedInstanceFailoverThrottled - There was a recent failover on the managed instance.\n\n * 400 ManagedInstanceFailoverNotSupportedOnSKU - This type of customer initiated failover is not supported on the given SKU.\n\n * 404 SubscriptionDoesNotHaveServer - The requested server was not found\n\n * 404 ServerNotInSubscriptionResourceGroup - Specified server does not exist in the specified resource group and subscription.\n\n * 409 ManagedInstanceNotInStateToFailover - The managed instance is currently in a state such that failover cannot be issued."
+          }
+        },
+        "x-ms-long-running-operation": true,
+        "x-ms-examples": {
+          "Failover a managed instance.": {
+            "$ref": "./examples/FailoverManagedInstance.json"
+          }
+        }
+      }
+    }
+  },
+  "definitions": {},
+  "parameters": {
+    "SubscriptionIdParameter": {
+      "name": "subscriptionId",
+      "in": "path",
+      "description": "The subscription ID that identifies an Azure subscription.",
+      "required": true,
+      "type": "string",
+      "x-ms-parameter-location": "client"
+    },
+    "ManagedInstanceNameParameter": {
+      "name": "managedInstanceName",
+      "in": "path",
+      "description": "The name of the managed instance.",
+      "required": true,
+      "type": "string",
+      "x-ms-parameter-location": "method"
+    }
+  },
+  "responses": {}
+}
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2019-06-01-preview/examples/FailoverManagedInstance.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2019-06-01-preview/examples/FailoverManagedInstance.json
new file mode 100644
index 000000000000..f5c660c2233a
--- /dev/null
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2019-06-01-preview/examples/FailoverManagedInstance.json
@@ -0,0 +1,13 @@
+{
+  "parameters": {
+    "subscriptionId": "00000000-1111-2222-3333-444444444444",
+    "resourceGroupName": "testrg",
+    "managedInstanceName": "testinstance",
+    "replicaType": "Primary",
+    "api-version": "2019-06-01-preview"
+  },
+  "responses": {
+    "200": {},
+    "202": {}
+  }
+}
diff --git a/specification/sql/resource-manager/readme.md b/specification/sql/resource-manager/readme.md
index c18845faab56..b59bbafab134 100644
--- a/specification/sql/resource-manager/readme.md
+++ b/specification/sql/resource-manager/readme.md
@@ -140,6 +140,7 @@ input-file:
 - Microsoft.Sql/preview/2019-06-01-preview/managedInstanceOperations.json
 - Microsoft.Sql/preview/2019-06-01-preview/syncGroups.json
 - Microsoft.Sql/preview/2019-06-01-preview/syncMembers.json
+- Microsoft.Sql/preview/2019-06-01-preview/FailoverManagedInstance.json
 
 # Needed when there is more than one input file
 override-info:
@@ -241,6 +242,7 @@ input-file:
 - Microsoft.Sql/preview/2019-06-01-preview/ServerAzureADAdministrators.json
 - Microsoft.Sql/preview/2019-06-01-preview/syncGroups.json
 - Microsoft.Sql/preview/2019-06-01-preview/syncMembers.json
+- Microsoft.Sql/preview/2019-06-01-preview/FailoverManagedInstance.json
 
 # Needed when there is more than one input file
 override-info:
@@ -333,6 +335,7 @@ input-file:
 - Microsoft.Sql/preview/2019-06-01-preview/ServerAzureADAdministrators.json
 - Microsoft.Sql/preview/2019-06-01-preview/syncGroups.json
 - Microsoft.Sql/preview/2019-06-01-preview/syncMembers.json
+- Microsoft.Sql/preview/2019-06-01-preview/FailoverManagedInstance.json
 
 # Needed when there is more than one input file
 override-info:
@@ -503,6 +506,7 @@ input-file:
  - ./Microsoft.Sql/preview/2019-06-01-preview/ServerAzureADAdministrators.json
  - ./Microsoft.Sql/preview/2019-06-01-preview/syncGroups.json
  - ./Microsoft.Sql/preview/2019-06-01-preview/syncMembers.json
+ - ./Microsoft.Sql/preview/2019-06-01-preview/FailoverManagedInstance.json
 
 # Needed when there is more than one input file
 override-info: