Non-monitored locks are used on personal computer (PC) operating systems. Non-monitored locks provide the same functionality as the monitored locks with one exception. If the server host on which the locks are established, fails and recovers, the locks will not be re-established. The client host is responsible for detecting a server host failure and re-establishing the locks. In addition, the client host informs the z/OS NFS NLM when it has rebooted so that the client host can discard all of the locks and file shares held for the client.