Your cloud provider allows frequently accessed data to reside on fast storage while less utilized data is migrated to slower storage. What type of configuration is this?

Topics:    
- Disk Types and Configurations    
- Tiering    
- File System Types    

Cloud storage is based on technologies that have long been used, such as SCSI and SATA. The cloud provides self-provisioning, metered usage, and elasticity of storage resources based on these storage standards.    
While public cloud providers take care of the underlying storage technologies, knowledge of disk types, interfaces, file systems, and RAID configurations is critical when setting up a private cloud.