Maintain unlimited data in sharepoint

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SharePoint2013

Hi,

As per the link, content database data limit is 4TB if we use all features.

In my organization we have 10 subsidiaries. And each subsidiary requires more space to maintain data I can say unlimited data as our employees uploads more documents into the portal.

Can anyone please suggest me how i can plan web application in this scenario?

Thanks in advance.

Regards,
Saya