HP StorageWorks 2/140 director product manager user guide - Page 225

Glossary port name Name that the user assigns to a particular port through the Product Manager. POST See power-on self test. power-on self test (POST) Series of self-tests executed each time the unit is booted or reset. preferred domain ID Domain ID that a director or switch is assigned by the principal switch in a switched fabric. The preferred domain ID becomes the active domain ID except when configured otherwise by the user. principal switch The director or switch that allocates domain IDs to itself and to all other switches in a fabric. There is always one principal switch in a fabric. If a switch is not connected to any other switches, it acts as its own principal switch. product name User-configurable identifier assigned to a managed product. Typically, this name is stored on the product itself. For the Director 2/64, the product name can also be accessed by an SNMP manager as the system name. prohibited port connection In S/390 operating mode, an attribute that removes dynamic connectivity capability. R_A_TOV See resource allocation time-out value. redundancy Performance characteristic of a system or product whose integral components are backed up by identical components to which operations will automatically failover in the event of a component failure. Redundancy is a vital characteristic of virtually all high-availability (24 hours per day, seven days per week) computer systems and networks. remote access link Connection to a device or program on a computer network via a (geographically) remote workstation. director product manager user guide Glossary-17