Describe the issue:
Right now, we don't clearly say that ODF can only be installed on flash disks (SSD/NVMe) on any platform.
In chapter 7.1 of "Planning your Deployment" we have a sentence about this for some platforms, but not all of them (e.g. vSphere is missing)
Please add a sentence about this in the documentation - at best in the storage device requirements.

Describe the task you were trying to accomplish:
Check wether HDD storage is supported for VMware deployments

Suggestions for improvement:
Needs central note that HDD is not supported

Document URL:
https://access.redhat.com/documentation/en-us/red_hat_openshift_data_foundation/4.14/html-single/planning_your_deployment/index

Chapter/Section Number and Title:
7

Product Version:
4.14

Environment Details:
VMware

Any other versions of this document that also needs this update:
Also needs to be updated for Fusion Data Foundation

Additional information: