Shadow Copies of Shared Folders is a Windows Server 2003 feature that takes point-in-time backups of user's data files. These point-in-time backups are also known as "snapshots." If a user unintentionally deletes or damages a file, that user might be able to recover a recent version of the file from a Shadow Copies of Shared Folders snapshot. Although Shadow Copies of Shared Folders is a server feature, this feature also requires support on the client computer. This client-side support is also referred to as the Shadow Copy Client.
Typically, Shadow Copies of Shared Folders runs on a local file server. In this situation, if a user unintentionally deletes a file, and if a good snapshot is not available on the local file server, that user could not restore the deleted file.
Data Protection Manager is a data protection solution that extends Shadow Copies of Shared Folders. Data Protection Manager is a stand-alone disk backup program that contains the End-User Recovery feature. You can use the End-User Recovery feature to recover files from a Data Protection Manager server. You can do this without having to obtain assistance from an administrator. In this situation, if you try to recover a shared file or folder that is located on a Data Protection Manager-protected server, the following behavior occurs:
- If local shadow copies or "snapshots" are available on the local file server, you are prompted to recover the file or folder from the local shadow copy.
- If the following conditions are true, you are redirected to shadow copies of the file or folder that exist on the Data Protection Manager server:
- No local shadow copies of that file or folder exist.
- The update that is described in this article is installed on the computer.
Note By default, the End User Recovery feature of the Shadow Copy Client directs the user to recover files from the local file server.
The update that is described in this article is designed to optimize the way that the Shadow Copy Client accesses snapshots. Without this update installed, the Shadow Copy Client opens every existing shadow copy for a particular volume. After you install this update, the Shadow Copy Client searches for unique versions of a shadow copy before the Shadow Copy Client opens the shadow copy. This new behavior significantly reduces the load that the Shadow Copy Client puts on the server.
Additionally, this software update replaces the functionality that is included in the hotfix that is described in the following Microsoft Knowledge Base article:
895536 How to use the End User Recovery functionality of Data Protection Manager in Windows XP
Microsoft Knowledge Base article 895536 describes an update to extend the Shadow Copy Client functionality. This software update changes the Shadow Copy Client. For example, if the Shadow Copy Client cannot locate the required shadow copy on the local server, the Shadow Copy Client looks for a Data Protection Manager server from which to obtain the shadow copy.
Important The change in functionality that is described in Microsoft Knowledge Base article 895536 is also included in the software update that is described in this article. Therefore, if you install the software update that is mentioned in this article, you do not have to install the update that is described in Microsoft Knowledge Base article 895536.
Note To use the End-User Recovery functionality of Data Protection Manager, you must do both the following:
- You must update the Shadow Copy Client on the client computer by installing the software update that is described in this article.
- You must enable the End User Recovery feature on the Data Protection Manager server.
Update information
Windows Server 2003
For Windows Server 2003, install the KB 925066 hotfix.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
925066
In a domain environment, Windows Explorer may stop responding on a client computer that is running Windows XP or Windows Server 2003, and CPU usage is very high on the primary domain controller
Microsoft Windows XP
Download information
Important After you install this update, we highly recommend that you install the hotfix that is described in Microsoft Knowledge Base article 941133. Microsoft Knowledge Base article 941133 fixes a problem that is introduced in this update.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
941133
The Properties dialog box of a DFS share takes several minutes to appear on a Windows XP-based client computer
The following files are available for download from the Microsoft
Download Center:
Windows XP, x86-based versionsDownload the WindowsXP-KB903234-x86-enu.exe package now.Windows XP, x64-based versionsDownload the WindowsXP-KB903234-x64-enu.exe package now.
Release Date: July 25, 2005
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.
Prerequisites
No prerequisites are required to install this update.
Restart requirement
You do not have to restart the computer after you apply this update.
Update replacement information
This update replaces the update that is described in Microsoft Knowledge Base article 895536.
File information
The English version of this update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the
Time Zone tab in the
Date and Time item in Control Panel.
Windows XP, x86-based versions Date Time Version Size File name
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19-Jul-2005 02:47 6.0.3800.2721 55,808 Twext.dll
Date Time Version Size File name
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16-Jul-2005 03:05 6.0.3790.2489 112,640 Twext.dll
16-Jul-2005 03:05 6.0.3790.2489 82,944 Wtwext.dll