Volume và máy ảo được sinh ra để đi kèm với nhau, nhưng không phải lúc nào việc đó cũng xảy ra

Khái niệm::
Fly Volumes and Fly Machines are meant to be paired together, but they are not always found in pairs. A Fly Volume can be created without a Fly Machine, or a Machine can be destroyed without destroying its volume. In these cases, the volume that’s left is called an “unattached” volume.

A Fly Machine that does not require a volume will never attach itself to one. A Fly Machine that does require a volume will always be attached to one. When a volume is required according to the app or Machine configuration, any method of creating a new Fly Machine will pick up an unattached volume, create a new volume to attach, or it will fail (in the case of fly machine commands or create Machine API calls).

Trích từ:: Fly Volumes overview · Fly Docs