Internal storage
Internal storage is directly attached to the system. The system can manage a combination of internal and external storage and represents all the detected storage as MDisks.
The system automatically detects the attached drives, determines the available drive classes, and recommends array configurations. These arrays are presented as MDisks, which can be added to pools in the same way as MDisks that are discovered on external storage systems are added. If the MDisks are created from different tiers of storage, Easy Tier® can be used to automatically manage the migration of highly used data to faster drives.