OpenStack Cloud Operating system supports two types of storage:
Persistent Storage: Persistent and independent of any particular instance, created by users. This further includes three storages:
- Object storage: to access binary objects through the REST API.
- Block storage: offers access-to-block storage devices by affixing volumes their current VM instances.
- Shared File System storage: provides a set of services to manage multiple files together for storage and exchange with multiple users at one time.
Ephemeral Storage: Referring to a single instance. As the name suggests, these storage options are temporary and short-lived and disappear once the VM is terminated.