Dropbox is dropping its unlimited storage option because some users were using it for purposes such as cryptocurrency mining, pooling storage for personal use, and even reselling storage. Now the company’s highest tiered “as much space as you want” plan will be limited.

Dropbox says that when customers purchase a Dropbox Advanced plan with three active licenses, they will get 15 TB of shared storage space – enough to store about 100 million documents, 4 million photos, or 7,500 hours of HD video. Each additional active license will provide 5 TB of storage space.

The changes come after in May, Google removed the “as much storage as you need” branding for its highest Workspace plan.

Current customers using less than 35 TB of storage per license, which is typical for more than 99% of Advanced customers, will be able to keep the total amount of storage used by their team at the time of the notice, plus an additional 5 TB of combined storage credit for five years at no additional cost to their existing plan.

Less than 1% of customers using 35 TB or more per license will be able to continue to use the current amount of storage at the time of notification, plus an additional 5 TB of combined storage credit for one year (up to 1,000 TB total) at no additional cost to their existing rate plan.

For customers who need additional space, additional storage modules will be available for purchase for new customers on September 18, and for existing customers on November 1: 1 TB for $10/month for a monthly purchase or $8/month for an annual purchase.

Dropbox will begin gradually transitioning existing customers to the new policy on Nov. 1. The company said it will notify all customers at least 30 days before the planned transition date.