Patent ID: 7694003

Claim:
A method for manually migrating a service in a server cluster, comprising: providing a migratable target list containing a list of servers in a server cluster capable of hosting an active service class instance, wherein the servers in the migratable target list are ordered by preference; deactivating an active service class instance located on a host server in the server cluster; selecting a new host server in the server cluster to host the active service class instance, the new host server being selected as the next server in the migratable target list containing a list of servers in the server cluster capable of hosting the active service class instance; activating the service class instance on the new host server; waiting for a response from the new host server indicating that the service class instance is active on the new host server; assigning a lease to the new host server hosting the active service class instance, the lease containing the length of time for which the new host server can host the active service class instance; and deactivating the active service class instance when the lease expires.