Create flexible and efficient storage volumes for your cloud

Indeed, you have the ability to adjust your block storage size through the members area. Be aware, however, that it necessitates rebooting the instance associated with your block storage.

No, due to potential data loss, you cannot decrease storage. However, free to migrate your files manually your files to a smaller block storage subscription. To do this, you need to 1- buy a new subscription at the right size, 2- attach the new volume to your instance, then mount this volume, 3- copy your files from the old block storage volume to the new volume, 4- detach the old volume, 4- restart your instance, 5- destroy the old storage.

Bulk storage can only be attached to instances deployed in the same region.