Home > Workload Solutions > Oracle > White Papers > Oracle ASM on ScaleIO Best Practices > ScaleIO volumes, ASM diskgroup, and database datafile relationship
Figure 4 demonstrates the relationship between the layers of interacting storage that store data for the Oracle database.
Figure 4. ScaleIO volume, ASM disk, Oracle data file and tablespace relationship
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.