For those on our 'Startup' plan, each license will have 1GB of data assigned to it. Those on our Go Paperless plan will have 10GB per license, those on the Customer Journey plan will have 20 and each license on an Automation account will have 30GB of data.
This data is essentially stored in a 'pool' for usage on the account as a whole. Meaning if you have 5 licenses on the Go Paperless plan, you will have 50GB total within the company 'pool'. Additional data, when purchased, is added to this pool as opposed to being allocated to individual licenses.
Please note -- Data is only assigned to Contracted and Rolling invoices, Daily licenses will not have any.