@Anjana we do not have any documentation for the Tech preview feature of PVC resize in the current release note Preview link https://access.redhat.com/documentation/en-us/red_hat_openshift_container_storage/4.5/html-single/4.5_release_notes/index?lb_target=preview We had discussed it to be added to Release Notes. The content needs to be decided.
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 1000 days