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Auto file synchronization5/26/2023 ![]() To exclude a specific file name from tiering (for example, FileName.vhd), run the following command: reg ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Azure\StorageSync" /v GhostingExclusionList /t REG_SZ /d FileName.vhd /f log), run the following command: reg ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Azure\StorageSync" /v GhostingExclusionList /t REG_SZ /d. To exclude certain file extensions from tiering (for example. Run one of the following commands to configure exclusions: To exclude files or folders from cloud tiering, perform the following steps: You can exclude files by file name, file extension or path. If you want to exclude files or folders from being tiered and remain local on the Windows Server, you can configure the GhostingExclusionList registry setting under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Azure\StorageSync. How to exclude files or folders from being tiered Running this command might result in data loss. Do not execute this command unless the Azure File Sync engineering team asks you to. The fsutil reparsepoint utility command also has the ability to delete a reparse point. ![]() When a file is fully recalled, Azure File Sync removes this attribute. Indicates that some or all of the file's content is not stored on disk. When a file is fully recalled, Azure File Sync removes the reparse point from the file. Users won't need to know that Azure File Sync is being used or how to get access to the file in your Azure file share. Azure File Sync uses reparse points to define to the Azure File Sync file system filter (StorageSync.sys) the cloud location where the file is stored. A reparse point is a special pointer for use by a file system filter. Indicates that the file has a reparse point. This attribute is only set on Windows Server 2019. Reading the file will cause at least some of the file content to be fetched from an Azure file share to which the server endpoint is connected. Indicates that the file's data is not fully present on local storage. This attribute is only set on Windows Server 2016 and older. If a file is fully recalled to disk, Azure File Sync converts it from a sparse file to a regular file. This might occur when files are partially read by applications like multimedia players or zip utilities. In a partially recalled file, that part of the file is already on disk. In a fully tiered file, the file stream is stored in the cloud. Azure File Sync uses sparse files because a file is either fully tiered or partially recalled. A sparse file is a specialized type of file that NTFS offers for efficient use when the file on the disk stream is mostly empty. ![]() Indicates that the file is a sparse file. This attribute is always set, regardless of whether the file is tiered or stored fully on disk. Indicates that the file should be backed up by backup software. A tiered file has the following attributes set: Attribute letter Right-click on a file, go to Details, and then scroll down to the Attributes property. There are several ways to check whether a file has been tiered to your Azure file share: If you choose to download the namespace and recall content during initial download to your server, then after the namespace comes down, files will be recalled based on the last modified timestamp till the volume free space policy and the optional date policy limits are reached. When you add a new server endpoint, it is possible you connected an empty server location to an Azure file share with your data in it. The one-hour interval applies here as well. However, the optional date policy will begin to work on an individual file basis, as soon as a file has been uploaded. The volume free space policy will not begin its work until initial upload of all files has finished. They need to be uploaded before cloud tiering can begin. When you first add a new server endpoint, often files exist in that server location. You can come across two situations when a new server endpoint is created: Whether or not files need to be tiered per set policies is evaluated once an hour. How to check if your files are being tiered For conceptual questions regarding cloud tiering, please see Azure Files FAQ. This article provides guidance for users who have questions related to managing tiered files.
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