Figure 4 demonstrates the relationship between the layers of interacting storage that store data for the Oracle database.
At the highest level in blue is the Oracle tablespace which contains objects made up of extents. These tablespaces comprise multiple data files stored in ASM.
The ASM files are stored in an ASM diskgroup made up of ASM Allocation Units. Each ASM diskgroup comprises multiple ASM disks.
The ASM disks map to storage volumes which are stored in storage pools in ScaleIO.