We are going to purchase the hosting service for the collaboration server. Four different plans are possible to purchase, with different storage capacity, number of repositories etc. What is the storage used for? Only changes made to a database, or the entire database? For instance, some of the Ecoinvent databases that we use take up 2-3 GB in zolca format. Does that mean that we need at least 3 GB to be able to commit and fetch changes in models where we use these databases?