Sandbox TypeStorage Limit
Developer Sandbox200 MB
Developer Pro Sandbox1 GB
Partial Data Sandbox5 GB and maximum 10,000 record per selected object.
Full CopySame Storage limits as your production organization.

To know about storage usage in your organization follow below steps.

Setup -> data management -> click on storage usage.

2. Sandbox refreshing limits

Sandbox TypeYou can refresh
Developer SandboxOnce per day
Developer Pro SandboxOnce per day
Partial Data SandboxYou can refresh a Partial Data sandbox 5 days after you created or last refreshed it. If you delete a Partial Data sandbox within those 5 days, you need to wait until after the 5 day period, from the date of last refresh or creation, to replace it.
Full copy SandboxYou can refresh a Full sandbox 29 days after you created or last refreshed it. If you delete a Full sandbox within those 29 days, you need to wait until after the 29 day period, from the date of last refresh or creation, to replace it.