Merge pull request #210823 from sipastak/db-ads

1984716 Data Box: [Update] Special mention on ADS support

Author: prmerger-automator[bot]

articles/databox/data-box-file-acls-preservation.md

@@ -7,7 +7,7 @@ author: alkohli
 ms.service: databox
 ms.subservice: pod
 ms.topic: conceptual
-ms.date: 07/13/2022
+ms.date: 09/12/2022
 ms.author: alkohli
 ---
 
@@ -51,6 +51,10 @@ The following file attributes aren't transferred:
 
 Read-only attributes on directories aren't transferred.
 
+## Alternate data streams and extended attributes
+
+[Alternate data streams](/openspecs/windows_protocols/ms-fscc/e2b19412-a925-4360-b009-86e3b8a020c8) and extended attributes are not supported in Azure Files, page blob, or block blob storage, so they are not transferred when copying data. 
+
 ## ACLs
 
 <!--ACLs DEFINITION