A detachable block volume device that allows you to dynamically expand the storage capacity of an instance. For more information, see Overview of Cloud Volume Storage.
To use any of the API operations, you must be authorized in an IAM policy. If you're not authorized, talk to an administrator. If you're an administrator who needs to write policies to give users access, see Getting Started with Policies.
Warning: Oracle recommends that you avoid using any confidential information when you supply string values using the API.