Microsoft KB Archive/933784

= Network performance may be very slow when you use Microsoft System Center Data Protection Manager 2006 on a Windows Server 2003-based computer =

Article ID: 933784

Article Last Modified on 4/5/2007

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APPLIES TO


 * Microsoft System Center Data Protection Manager 2006

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SYMPTOMS
When you try to use Microsoft System Center Data Protection Manager (DPM) 2006 on a Microsoft Windows Server 2003-based computer, you may experience the following symptoms:
 * Network performance may be very slow when initial replica creation occurs.
 * Network performance may be very slow during synchronization.
 * Network performance may be very slow during a consistency check.
 * Packets that are marked as level 5 may be discarded.
 * Packets may be transferred at 1 KB per second.



CAUSE
This problem may occur on a Multiprotocol Label Switching (MPLS) network that does not use the Quality of Service (QoS) level 5 (SERVICETYPE_GUARANTEED Priority 5) service type. DPM 2006 requires Qos level 5 to throttle network bandwidth usage.



WORKAROUND
To work around this problem, do not enable network bandwidth usage throttling for protection groups that contain a server when the server uses MPLS.

To disable network bandwidth usage throttling, follow these steps:
 * 1) Click Start, click All Programs, and then click Microsoft System Center Data Protection Manager.
 * 2) On the navigation bar, click Protection.
 * 3) Click the protection group that contains the server that uses MPLS.
 * 4) In the Actions pane, click Modify protection options.
 * 5) On the Performance tab, click to clear the Enable network bandwidth usage throttling check box.

Additional query words: win2003

Keywords: kbexpertiseadvanced kbtshoot kbprb KB933784

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