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Distributed Link Tracking Client (System Services for the Windows Server 2003 Family and Windows XP Operating Systems)

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Service Name: Trkwrks

Executable Name: svchost.exe -k netsvcs

Log On As: LocalSystem

Description: Maintains links between the NTFS file system files within a computer or across computers in a network domain. The DLT Client service ensures that shortcuts and OLE (Object Linking and Embedding) links continue to work after the target file is renamed or moved. When a shortcut to a file on an NTFS v5 volume is created, distributed link tracking stamps a unique object identifier (ID) into the target file, known as the link source. Information about the object ID is also stored within the referring file, known as the link client.

Distributed link tracking can use this object ID to locate the link source file in any combination of the following scenarios that occur within a Windows domain:

  • The link source file is renamed.

  • The link source file is moved to another folder on the same volume or to a different volume on the same computer.

  • The link source file is moved from one NTFS volume to another within the same domain. (The NTFS volumes must be on computers running Windows 2000 or later. The NTFS volumes cannot be on removable media.)

  • The computer containing the link source file is renamed.

  • The shared network folder containing the link source file is renamed.

  • The volume containing the link source file is moved to another computer within the same domain.

Distributed link tracking also attempts to maintain links even when they do not occur within a domain, such as cross-domain, within a workgroup, or on a single computer that is not connected to a network. Links can always be maintained in these scenarios when a link source is moved within a computer, or when the network shared folder on the link source computer is changed. Typically, links can be maintained when the link source is moved to another computer, though this form of tracking is less reliable over time.

Distributed link tracking uses different services for client and server:

  • The DLT Client service runs on all Windows 2000-based or later computers. In non-networked computers, the DLT Client service performs all activities related to link tracking.

  • The DLT Server service runs on Windows 2000 Server or later domain controllers. The service maintains information relating to the movement of link source files. Because of this service and the information it maintains, links within a domain are more reliable than those outside a domain. For computers that run in a domain, the DLT Client service takes advantage of this information by communicating with the DLT Server service.

noteNote
The DLT Client service monitors activity on NTFS volumes and stores maintenance information in a file called Tracking.log, which is located in a hidden folder called System Volume Information at the root of each volume. This folder is protected by permissions that allow only the system to have access to it. The folder is also used by other Windows services, such as Indexing Service.

If the DLT Client service is disabled, you won’t be able to track links. Likewise, users on other computers won’t be able to track links for documents on your computer.

See also Distributed Link Tracking Server.

Available on: Windows XP Home, Windows XP Professional; Windows Server 2003, Standard Edition; Windows Server 2003, Enterprise Edition; Windows Server 2003, Datacenter Edition and Windows Server 2003, Web Edition.

Installed through: Default operating system installation

Startup type: Automatic

Service status: Started

This service depends on the following system components:

Remote Procedure Call

The following system components depend on this service: None

IP Port Numbers used: None

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