Every cloud provider allows you to bring your own OS and configure disks in any way you want.
May be you're thinking about cheapest VPS possible, driven by something like cpanel. Those are not cloud providers. But usually you wouldn't choose them for reliable service, because their whole model is overselling.
May be you're thinking about cheapest VPS possible, driven by something like cpanel. Those are not cloud providers. But usually you wouldn't choose them for reliable service, because their whole model is overselling.