GridMarkets operates a "fair use" policy and generally allows up to 1TB of storage to be kept in Envoy for 15 days as long as there is activity on a project (i.e. jobs are run and output is generated). However, project files will be purged from the render nodes after 3 days of inactivity. Therefore, if you run any job on a project that has been deleted from the render nodes then the files will need to be resyched from Envoy which may take some time.
If a longer period of retention is required on the render nodes then you can consider using one of our subscription plans or please contact us at Support@GridMarkets.com.