Update to storage file descriptions

Author: rolyon

articles/role-based-access-control/built-in-roles.md

@@ -148,9 +148,9 @@ The following table provides a brief description of each built-in role. Click th
 > | [Storage Blob Data Owner](#storage-blob-data-owner) | Provides full access to Azure Storage blob containers and data, including assigning POSIX access control. To learn which actions are required for a given data operation, see [Permissions for calling blob and queue data operations](https://docs.microsoft.com/rest/api/storageservices/authenticate-with-azure-active-directory#permissions-for-calling-blob-and-queue-data-operations). | b7e6dc6d-f1e8-4753-8033-0f276bb0955b |
 > | [Storage Blob Data Reader](#storage-blob-data-reader) | Read and list Azure Storage containers and blobs. To learn which actions are required for a given data operation, see [Permissions for calling blob and queue data operations](https://docs.microsoft.com/rest/api/storageservices/authenticate-with-azure-active-directory#permissions-for-calling-blob-and-queue-data-operations). | 2a2b9908-6ea1-4ae2-8e65-a410df84e7d1 |
 > | [Storage Blob Delegator](#storage-blob-delegator) | Get a user delegation key, which can then be used to create a shared access signature for a container or blob that is signed with Azure AD credentials. For more information, see [Create a user delegation SAS](https://docs.microsoft.com/rest/api/storageservices/create-user-delegation-sas). | db58b8e5-c6ad-4a2a-8342-4190687cbf4a |
-> | [Storage File Data SMB Share Contributor](#storage-file-data-smb-share-contributor) | Allows for read, write, and delete access in Azure Storage file shares over SMB | 0c867c2a-1d8c-454a-a3db-ab2ea1bdc8bb |
-> | [Storage File Data SMB Share Elevated Contributor](#storage-file-data-smb-share-elevated-contributor) | Allows for read, write, delete and modify NTFS permission access in Azure Storage file shares over SMB | a7264617-510b-434b-a828-9731dc254ea7 |
-> | [Storage File Data SMB Share Reader](#storage-file-data-smb-share-reader) | Allows for read access to Azure File Share over SMB | aba4ae5f-2193-4029-9191-0cb91df5e314 |
+> | [Storage File Data SMB Share Contributor](#storage-file-data-smb-share-contributor) | Allows for read, write, and delete access on files/directories in Azure file shares. This role has no built-in equivalent on Windows file servers. |
+> | [Storage File Data SMB Share Elevated Contributor](#storage-file-data-smb-share-elevated-contributor) | Allows for read, write, delete, and modify ACLs on files/directories in Azure file shares. This role is equivalent to a file share ACL of change on Windows file servers. | a7264617-510b-434b-a828-9731dc254ea7 |
+> | [Storage File Data SMB Share Reader](#storage-file-data-smb-share-reader) | Allows for read access on files/directories in Azure file shares. This role is equivalent to a file share ACL of read on  Windows file servers. | aba4ae5f-2193-4029-9191-0cb91df5e314 |
 > | [Storage Queue Data Contributor](#storage-queue-data-contributor) | Read, write, and delete Azure Storage queues and queue messages. To learn which actions are required for a given data operation, see [Permissions for calling blob and queue data operations](https://docs.microsoft.com/rest/api/storageservices/authenticate-with-azure-active-directory#permissions-for-calling-blob-and-queue-data-operations). | 974c5e8b-45b9-4653-ba55-5f855dd0fb88 |
 > | [Storage Queue Data Message Processor](#storage-queue-data-message-processor) | Peek, retrieve, and delete a message from an Azure Storage queue. To learn which actions are required for a given data operation, see [Permissions for calling blob and queue data operations](https://docs.microsoft.com/rest/api/storageservices/authenticate-with-azure-active-directory#permissions-for-calling-blob-and-queue-data-operations). | 8a0f0c08-91a1-4084-bc3d-661d67233fed |
 > | [Storage Queue Data Message Sender](#storage-queue-data-message-sender) | Add messages to an Azure Storage queue. To learn which actions are required for a given data operation, see [Permissions for calling blob and queue data operations](https://docs.microsoft.com/rest/api/storageservices/authenticate-with-azure-active-directory#permissions-for-calling-blob-and-queue-data-operations). | c6a89b2d-59bc-44d0-9896-0f6e12d7b80a |
@@ -2911,7 +2911,7 @@ The following table provides a brief description of each built-in role. Click th
 > [!div class="mx-tableFixed"]
 > | | |
 > | --- | --- |
-> | **Description** | Allows for read, write, and delete access in Azure Storage file shares over SMB |
+> | **Description** | Allows for read, write, and delete access on files/directories in Azure file shares. This role has no built-in equivalent on Windows file servers. |
 > | **Id** | 0c867c2a-1d8c-454a-a3db-ab2ea1bdc8bb |
 > | **Actions** |  |
 > | *none* |  |
@@ -2928,7 +2928,7 @@ The following table provides a brief description of each built-in role. Click th
 > [!div class="mx-tableFixed"]
 > | | |
 > | --- | --- |
-> | **Description** | Allows for read, write, delete and modify NTFS permission access in Azure Storage file shares over SMB |
+> | **Description** | Allows for read, write, delete, and modify ACLs on files/directories in Azure file shares. This role is equivalent to a file share ACL of change on Windows file servers. |
 > | **Id** | a7264617-510b-434b-a828-9731dc254ea7 |
 > | **Actions** |  |
 > | *none* |  |
@@ -2946,7 +2946,7 @@ The following table provides a brief description of each built-in role. Click th
 > [!div class="mx-tableFixed"]
 > | | |
 > | --- | --- |
-> | **Description** | Allows for read access to Azure File Share over SMB |
+> | **Description** | Allows for read access on files/directories in Azure file shares. This role is equivalent to a file share ACL of read on  Windows file servers. |
 > | **Id** | aba4ae5f-2193-4029-9191-0cb91df5e314 |
 > | **Actions** |  |
 > | *none* |  |