A system cluster, a method and a recording medium are provided in which an administering host system of a cluster maintains global information for globally managing the availability of services to users on a basis of the system cluster. Individual host systems also maintain local information, the local information being usable for locally managing the availability of services or resources to users of those host systems. Thus, the availability of services to users of the cluster is managed locally for some users via referring to the local information at the host system to which the user makes a request. For other users, the availability of services is managed via referring to the global information. A table is maintained at each of the host systems which indicates for each user defined to the cluster whether the services available to the particular user are managed globally or locally.
 This invention was made with government support under subcontract B519700 under prime contract W-7405-ENG-48 awarded by the Department of Energy. The Government has certain rights in this invention.