We are running out of file storage in our Salesforce Org. Other than deleting old data or buying more storage we are looking for other options.

Below is one of the option I think of but not sure if it can be achieved:
User uploads files in Salesforce. But it should actually save to SharePoint/Google Drive. User should not know that, file is being saved in SharePoint and Only the Reference to the files should be in Salesforce. 
After save, User can access all these files and when he/she should clicks the file in Salesforce, it should pull the data from SharePoint and display it for him. So this way we will not use memory in Salesforce.

Any other suggestions are greatly appreciated.

Thanks in advance.

We are in a process of migrating from one instance to another instance. Currently we are migrating from one org(production) to another org(Production) using data loader. We are not able to get the approval history section related details for the records. How do we get that section ?

Thanks in advance.

We are in a process of migrating from one instance to another instance. Currently we are migrating from one org(production) to another org(Production) using data loader. We are not able to get the approval history section related details for the records. How do we get that section ?

Thanks in advance.