Pro license - Max Dataset size

Hi RakeshSinghr 

The max dataset size is 1GB, but please note that "so if max dataset size is 1 GB - does it mean there can be up to 10 different datasets with 1 GB size", it's not very incorrect. as we know, the workspace storage is 10GB, but when we refresh the 1GB dataset , actually we need 2GB storage size, so if you have 10 datasets with 1GB size, the refresh is probable not working.

I believe you can get more hints from this official document:

https://docs.microsoft.com/en-us/power-bi/admin/service-admin-manage-your-data-storage-in-power-bi 

There is a 1 GB limit per dataset that is imported into Power BI. If you have chosen to keep the Excel experience, instead of importing the data, the limit is 250 MB for the dataset.

For optimize the model, you can refer to the details below:

https://docs.microsoft.com/en-us/power-bi/guidance/power-bi-optimization#optimizing-the-data-model 

• Data reduction techniques for Import modeling
• DirectQuery model guidance in Power BI Desktop
• Composite model guidance in Power BI Desktop