Hi, When reading the limitations of the DPS: https://learn.microsoft.com/en-us/azure/iot-dps/about-iot-dps Then it say 1 million registrations and 50 IoT Hubs, so my question is: The limit on devices in an IoT hub is 1 million devices, but when I have one DPS with multiple IoTHubs then I am still limited to "only" 1 million devices? I will not be able to use the sum of all the possible registrations that the backend IoTHubs can handle? Thanks, Mikkel

Hello @Mikkel Vagtborg Welcome to Microsoft Q&A Platform and thanks for your query. I agree that each IoTHub has 1 Million devices limit. But the DPS quotas are per Device Provisioning Service instance. Below is the response/confirmation from the product team. Quotas are per DPS. The number of enrollments/registrations can be increased by contacting Microsoft Support . Please comment below to let us know how can we help you further in this matter.

Understanding the IoT Device Provisioning Service registration limitations

Accepted answer

QuantumCache 20,261 Reputation points

2020-12-01T20:44:04.667+00:00

Hello @Mikkel Vagtborg Welcome to Microsoft Q&A Platform and thanks for your query.

I agree that each IoTHub has 1 Million devices limit. But the DPS quotas are per Device Provisioning Service instance. Below is the response/confirmation from the product team.

Quotas are per DPS. The number of enrollments/registrations can be increased by contacting Microsoft Support.

Please comment below to let us know how can we help you further in this matter.
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QuantumCache 20,261 Reputation points

2020-12-03T01:46:30.73+00:00

Hello @Mikkel Vagtborg , Just checking back, could you please let us know if you need further help in this matter.

Mikkel Vagtborg 26 Reputation points

2020-12-03T07:44:18.677+00:00

Hi @QuantumCache ,

Thank you very much for the quick reply. I got what I needed

Regards,
Mikkel

Mikkel Vagtborg 26 Reputation points

2020-12-03T11:35:20.12+00:00

A few follow-up questions:

1) Lets say I need to exceed the limit, do you know how much I can get if support is contacted?

2) If I want to design a setup with more than the limit of one DPS, is it the only solution of adding one DPS code to a batch of 1 million devices and then the next batch will need another DPS code?

3) I can see that the same IoTHub can be used by multiple DPS's, is that a possible way to fully use the capacity of all the IoTHubs or not recommended to do?

Regards,
Mikkel

QuantumCache 20,261 Reputation points

2020-12-03T17:59:39.827+00:00

Hello @Mikkel Vagtborg , I am checking with my team on these follow-up questions. Please stay tuned.

QuantumCache 20,261 Reputation points

2020-12-03T18:32:25.77+00:00

Hello @Mikkel Vagtborg ,

Lets say I need to exceed the limit, do you know how much I can get if support is contacted?
Ans: Depends on how much the customer asks for. We may need to work directly with the customer to support a very large number of devices- What is your requirement?

2) If I want to design a setup with more than the limit of one DPS...
Ans: Yes, each DPS quota limit is 1 million. You may either contact the support team or may just spin-up another DPS for the remaining devices. The above question is similar to this.

3) I can see that the same IoTHub can be used by multiple DPS's....
Ans: This document will give a perfect example of this scenario on why we use multiple IoTHubs and single DPS: Provision devices across load-balanced IoT hubs

Please comment below if this helps with your query.

Mikkel Vagtborg 26 Reputation points

2020-12-04T12:10:01.223+00:00

Hi @QuantumCache

We are currently planning 10 million devices and want to be sure if one DPS is sufficient.

We are currently in the analyzing phase for a customer project and want to be sure how to plan this.

Thank you
Mikkel
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Understanding the IoT Device Provisioning Service registration limitations

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