The most demanding Oracle Database workloads require very high I/O capacity. They also need low-latency access to storage. This document describes a high-bandwidth, low-latency solution for Oracle Database workloads.

The solution provides shared file access with the network file system (NFS) protocol. The architecture uses Azure NetApp Files, a shared file-storage service. Azure NetApp Files offers benefits:

• Disk I/O limits on access rates that apply at the virtual machine (VM) level don't affect Azure NetApp Files. As a result, you can use smaller VMs than you would with disk storage without degrading performance. This approach significantly reduces costs.
• Azure NetApp Files offers flexibility. You can enlarge or reduce deployments on demand to make your configuration cost effective.

https://learn.microsoft.com/en-us/azure/architecture/example-scenario/file-storage/oracle-azure-netapp-files