Understanding the IoT Device Provisioning Service registration limitations

Question

Understanding the IoT Device Provisioning Service registration limitations

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

Answer 1

SatishBoddu-MSFT 14,606

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.

SatishBoddu-MSFT 14,606 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 @SatishBoddu-MSFT ,

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
SatishBoddu-MSFT 14,606 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.
SatishBoddu-MSFT 14,606 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 @SatishBoddu-MSFT

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

Understanding the IoT Device Provisioning Service registration limitations

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