diff --git a/specification/storage/data-plane/Microsoft.FileStorage/preview/2019-12-12/file.json b/specification/storage/data-plane/Microsoft.FileStorage/preview/2019-12-12/file.json
index a6551a53d9cf..c36b950564d2 100644
--- a/specification/storage/data-plane/Microsoft.FileStorage/preview/2019-12-12/file.json
+++ b/specification/storage/data-plane/Microsoft.FileStorage/preview/2019-12-12/file.json
@@ -4546,6 +4546,19 @@
                 }
             }
         },
+        "SmbMultichannel": {
+            "description": "Settings for SMB multichannel",
+            "type": "object",
+            "properties": {
+                "Enabled": {
+                    "type": "boolean",
+                    "description": "If SMB multichannel is enabled."
+                }
+            },
+            "xml": {
+                "name": "Multichannel"
+            }
+        },
         "Range": {
             "description": "An Azure Storage file range.",
             "type": "object",
@@ -4569,6 +4582,19 @@
                 "name": "Range"
             }
         },
+        "ProtocolSettings": {
+            "description": "Protocol settings",
+            "type": "object",
+            "properties": {
+                "SmbSettings": {
+                    "description": "Settings for SMB protocol.",
+                    "$ref": "#/definitions/SmbSettings",
+                    "xml": {
+                        "name": "SMB"
+                    }
+                }
+            }
+        },
         "RangeList": {
             "description": "A list of non-overlapping valid ranges, sorted by increasing address range.",
             "type": "array",
@@ -4724,6 +4750,16 @@
                 "name": "SignedIdentifiers"
             }
         },
+        "SmbSettings": {
+            "description": "Settings for SMB protocol.",
+            "type": "object",
+            "properties": {
+                "Multichannel": {
+                    "description": "Settings for SMB Multichannel.",
+                    "$ref": "#/definitions/SmbMultichannel"
+                }
+            }
+        },
         "StorageServiceProperties": {
             "description": "Storage service properties.",
             "type": "object",
@@ -4745,6 +4781,10 @@
                     "xml": {
                         "wrapped": true
                     }
+                },
+                "ProtocolSettings": {
+                    "description": "Protocol settings",
+                    "$ref":"#/definitions/ProtocolSettings"
                 }
             }
         },
diff --git a/specification/storage/data-plane/Microsoft.FileStorage/preview/2020-02-10/file.json b/specification/storage/data-plane/Microsoft.FileStorage/preview/2020-02-10/file.json
index af23b5bdc1c4..ccfdafc7c82a 100644
--- a/specification/storage/data-plane/Microsoft.FileStorage/preview/2020-02-10/file.json
+++ b/specification/storage/data-plane/Microsoft.FileStorage/preview/2020-02-10/file.json
@@ -4546,6 +4546,19 @@
                 }
             }
         },
+        "SmbMultichannel": {
+            "description": "Settings for SMB multichannel",
+            "type": "object",
+            "properties": {
+                "Enabled": {
+                    "type": "boolean",
+                    "description": "If SMB multichannel is enabled."
+                }
+            },
+            "xml": {
+                "name": "Multichannel"
+            }
+        },
         "Range": {
             "description": "An Azure Storage file range.",
             "type": "object",
@@ -4569,6 +4582,19 @@
                 "name": "Range"
             }
         },
+        "ProtocolSettings": {
+            "description": "Protocol settings",
+            "type": "object",
+            "properties": {
+                "SmbSettings": {
+                    "description": "Settings for SMB protocol.",
+                    "$ref": "#/definitions/SmbSettings",
+                    "xml": {
+                        "name": "SMB"
+                    }
+                }
+            }
+        },
         "RangeList": {
             "description": "A list of non-overlapping valid ranges, sorted by increasing address range.",
             "type": "array",
@@ -4724,6 +4750,16 @@
                 "name": "SignedIdentifiers"
             }
         },
+        "SmbSettings": {
+            "description": "Settings for SMB protocol.",
+            "type": "object",
+            "properties": {
+                "Multichannel": {
+                    "description": "Settings for SMB Multichannel.",
+                    "$ref": "#/definitions/SmbMultichannel"
+                }
+            }
+        },
         "StorageServiceProperties": {
             "description": "Storage service properties.",
             "type": "object",
@@ -4745,6 +4781,10 @@
                     "xml": {
                         "wrapped": true
                     }
+                },
+                "ProtocolSettings": {
+                    "description": "Protocol settings",
+                    "$ref":"#/definitions/ProtocolSettings"
                 }
             }
         },