Storage Layers

The stack of storage management technologies is deployed on a host. Deployed technology at any layer can provide storage resources to any layer above it and consume the storage resources from any layer below it.

The ultimate consumer of the storage is application level software such as an Oracle database or the end users. In Enterprise Manager, Volumes refers to Volume Management and Software*RAID (Redundant Arrays of Independent Disks) technologies offered by various vendors.

In Enterprise Manager, the following storage layers and their associations have been modeled.

Storage Layer	Can Provide Storage To:
Disks	Volumes, File Systems, Database, ASM
Volumes	File Systems, Database, ASM
ASM	Database
File Systems	Database