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: