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SnapCenter Backups are slow after upgrading to 6.0.1P1 when winrm is disabled on Plug-in hosts

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Applies to

  • SnapCenter Server 6.0.1P1 and above [SC]
  • SnapCenter Plug-in for SQL [SCSQL]
  • Windows Remote Management [WinRM]

Issue

  • SnapCenter Backups are very slow after upgrading to 6.0.1P1. 
  • Host and Disk discoveries/enumeration were slow. SnapCenter would take a long time to enumerate disks or the hosts.
  • The following error messages are reported in SCW_<JOBID>.log
2025-06-24T16:04:42.1110109+00:00 DEBUG SCW_33625 PID=[21872] TID=[105] ++ClusterWrapper::OpenRunSpace

2025-06-24T16:04:42.1110231+00:00 ERROR SCW_33625 PID=[21872] TID=[105] serverName <Plug-in Host> OpenRunspaceMaxRetries 10 OpenRunspaceRetryDelayInMS 1000

2025-06-24T16:05:18.6528268+00:00 ERROR SCW_33625 PID=[21872] TID=[105] PSRemotingTransportException in OpenRunSpace (attempt 1): Connecting to remote server <Plug-in Host> failed with the following error message : The client cannot connect to the destination specified in the request. Verify that the service on the destination is running and is accepting requests. Consult the logs and documentation for the WS-Management service running on the destination, most commonly IIS or WinRM. If the destination is the WinRM service, run the following command on the destination to analyze and configure the WinRM service: "winrm quickconfig". For more information, see the about_Remote_Troubleshooting Help topic., Error Code: -2144108526

......

(10th Attempt before timeout)

2025-06-24T16:10:56.8851196+00:00 ERROR SCW_33625 PID=[21872] TID=[105] PSRemotingTransportException in OpenRunSpace (attempt 10): Connecting to remote server <Plug-in Host> failed with the following error message : The client cannot connect to the destination specified in the request. Verify that the service on the destination is running and is accepting requests. Consult the logs and documentation for the WS-Management service running on the destination, most commonly IIS or WinRM. If the destination is the WinRM service, run the following command on the destination to analyze and configure the WinRM service: "winrm quickconfig". For more information, see the about_Remote_Troubleshooting Help topic., Error Code: -2144108526

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