In order to effectively free space and optimize the storage capacity of our servers, please do not forget to clean regularly your datasets and histories by clicking on the small gear at the top of your history ("Purge Deleted Datasets "or" Delete Permanently ").
Please have a look at this documentation: Delete vs Delete Permanently
Afin de libérer effectivement de l'espace et d'optimiser les capacités de stockage de nos serveurs, merci de ne pas oublier de faire le ménage régulièrement dans vos datasets et historiques en cliquant sur la petite roue crantée en haut de votre historique ("Purge Deleted Datasets" or "Delete Permanently").
Please have a look to this documentation: Delete vs Delete Permanently