Maximum number of users for simultaneous data collection

Good morning all,

We set up a DHIS2 instance for tracker program data collection on the mobile app, and have about 15,000 users to be added to the system for data collection.
Firstly, what’s the maximum amount of users DHIS2 can accept?
Secondly, What are the potential challenges of having 15k+ users enter data simultaneously on the system using mobile phones?
Thirdly, what server specifications would be recommended for such large scale deployment?

Thank you in advance for your response!

Hi @Rae
I’ll wait for input on the other questions but for your third question, I’d like to share a resource:

In the docs ‘server specifications’ are mentioned with consideration to small instance, medium instance, and large instance. In your case, you’d need the minimum mentioned for large instance. /installation.html#install_server_specifications

Are there any specific questions about these specifications? Thanks!

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Thanks for your response @Gassim
That answers question 3.

Hi @Rae
There is not a hard maximum of users DHIS2 can accept, there is no problem with that. Having a lot of mobile users introduces some load in the server because of the synchronization process. In this sense, it is important to properly configure each user: assigned org units, programs, etc. Apart from that, it should be fine to have such a high number of users.

Regards,

Xavier

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