1. An article of manufacture comprising: at least one computer usable medium having computer readable program code logic to facilitate management of storage of a computing environment that supports pageable guests, said computer readable program code logic for execution by a computer for performing a method comprising: detecting a fault in an attempt to access an area of storage that is protected by at least one of a host level of protection and a guest level of protection; and determining whether the detected fault is due to the host level of protection or the guest level of protection.