I would assume you have checked this https://experienceleague.adobe.com/docs/experience-manager-64/managing/managing-further-reference/ha...
Below assumption is both data/node stores in same place. i feel there is no direct answer to that question , it all depends on type of web applications running in AEM
Disk Space/ Hard Drive
The disk space required depends heavily on both the volume and type of your web application. The calculations should take into account:
- the quantity and size of pages, assets and other repository-stored entities such as workflows, profiles etc.
- the estimated frequency of content changes and therefore the creation of content versions
- the volume of DAM asset renditions that will be generated.
- the overall growth of content over time
Disk space is continuously monitored during Online, and Offline, Revision Cleanup. Should the available disk space drop below a critical value, the process will be cancelled. The critical value is 25% of the current disk footprint of the repository and it is not configurable. It is recommended to size the disk at least two or three times larger than the repository size including the estimated growth.