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Alarm Server high bandwidth in ethernet network to SQL Server

Miguel

Hi all,

We have a SCADA redundant system with Citect SCADA 2018.

  • Machine 1 - Citect Primary Server
  • Machine 2 - Citect Standby Server
  • Machine 3 - SQL Server (for alarm log device)

The larms are logged in SQL Server, using the Device AlarmHistDB.

Lately, we have observed extreme bandwidth from SQL Server to Citect Server 1 (constantly at the network limit which is 100Mbits/s).

 

if we stop the alarm server process in citect server 1, the network bandwidth to Citect 1 normalizes and the Citect Server 2 remains constantly low bandwidth.

Someone have the same issue. can you share the experience.

Thank you

Miguel 

Parents
  • If you stop the primary alarm server the transition logging of the alarms stops. I can't see the alarm category numbers in the screencapture. The last one differs. Could it be that this alarm category is used for some sort of event logging? If there are a large number of alarms logged into this category this could be the cause.
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  • If you stop the primary alarm server the transition logging of the alarms stops. I can't see the alarm category numbers in the screencapture. The last one differs. Could it be that this alarm category is used for some sort of event logging? If there are a large number of alarms logged into this category this could be the cause.
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