FAQs: zenon in the Cloud (Part 2/2)

zenon supports manufacturing companies on the road to the Smart Factory. With the connection to Microsoft Azure, for example, companies can create a cost-effective and at the same time highly scalable infrastructure for analyses of data throughout sites. Last week I already published part 1 of FAQs: zenon in the Cloud. Here’s the second part.


How much does SQL evacuation to the cloud cost?

With Microsoft Azure, you only pay for the services you have used. These are billed by the minute. To move data to the cloud, you need a cloud service in Azure that works as a worker role instance and an SQL database. You can find all information about prices, including a price calculator, on the Microsoft Azure website.

How does the real-time transfer of values via the Service Bus work?

Transfer is implemented by means of name-based addressing. The Azure Process Gateway transfers the variable values from the source computer to the Microsoft Service Bus. To do this, you must enter the connection string to the Microsoft Service Bus and stipulate a freely definable name for the queue to be created in the Service Bus and the name of the target computer to which the values are ultimately to be transferred.
You also need an Azure driver on the target computer, which reads off the values from the Microsoft Service Bus. To do this, you need only enter the connection string to the service bus in the driver settings and the corresponding queue from which the values are to be read. As soon as the Azure Process Gateway starts, the selected queue is created in the Service Bus. In this way, only the correct target computer can read the variable values.

How long are the messages in the queue saved in the Service Bus?

You can set the duration of the messages by means of a property in the queue. This means that if the messages are not immediately read by the Azure driver or the worker role instances, they are saved according to the setting in the queue. The default value is one day.

What happens if the Internet connection is interrupted during a set archive evacuation?

This is not a problem at all. If the Internet connection is interrupted, the archive files are cached locally in the Runtime folder until the connection is reestablished. Then all archive files to be evacuated are written to the SQL database in the cloud.

Can I reuse archive data that is stored in the cloud in zenon?

Yes, the archive data that has been evacuated can, of course, be reused from the cloud. The reading of data from the cloud SQL database works in exactly the same way as a local SQL database. This data can therefore be displayed in reports or trends.

What next? What do I do if I still have questions or want to see more functions?

The zenon Cloud Solution has been implemented in zenon version 7.20 for the first time. Further performance enhancements and new functions are expected in future software versions. You can find more information in zenon documentation, in the COPA-DATA knowledge base and in our forum at www.copadata.com/support. Your local COPA-DATA sales contact would also be happy to help you.


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