Abstract: Systems, methods, and computer program products to perform an operation comprising receiving a request to download a first object by a first computing device, wherein the first computing device is of a plurality of computing devices in a local area network (LAN), referencing an object catalog in a mail server using an identifier associated with the first object, and upon determining that the object catalog does not include the identifier of the first object, storing the first object at a first storage location of a first storage device associated with the first computing device, computing a hash value for the first object, and storing, in the object catalog, indications of the hash value, the first storage device, and the first storage location of the first storage device in a record associated with the first object.

Abstract: A method for managing a plurality of computing machines comprises deploying an indication of a management activity having an applicability rule to selected one or more of the computing machines to cause each of the selected computing machines fulfilling the applicability rule to execute the management activity on the selected computing machine, receiving an error message for each failure computing machine of the selected computing machines wherein the execution of the management activity has failed, determining at least one relevant property of each failure computing machine among a plurality of selected properties of the computing machines according to the corresponding error message, collecting a value of at least part of the selected properties for at least part of the computing machines, the values of the selected properties comprising a failure value of each relevant property for each failure computing machine, and updating the applicability rule according to the failure values.