Per [1],
"CodeReady Workspaces server, Keycloak and PostgreSQL pods, and workspace pods use Persistent Volume Claims (PVCs), which are bound to the physical Persistent Volumes (PVs) with ReadWriteOnce access mode"

An examination of the default and installation workspaces shows a PostGres PVC, but not a PVC for CodeReady Workspaces server or Keycloak. Please clarify.

[1] https://access.redhat.com/documentation/en-us/red_hat_codeready_workspaces/1.2/html-single/administration_guide/index#how-the-che-server-uses-PVCs-and-PVs-for-storage