A variety of devices for use in accessing the subarachnoid space are described. The PAB telephone network-based system includes an application unit to coordinate the addition of new contact data by a user via his telephone, andor is used in conjunction with his Web-browser or other InternetIntranet access device. The upper surface of the hard disk cage is fixed on the hard disk cage such that the upper surface of the hard disk cage and the hard disk cage would form an integral whole. The invention also provides a front wall structure that minimizes hot spots in the container front wall by integrally-forming the front wall, connection structure, and bulkhead structure in a single structural component so as to minimize the use of fastener devices.