NonStop S-Series Server Description Manual (G06.24+)

Glossary
HP NonStop S-Series Server Description Manual—520331-003
Glossary-92
ServerNet router 1
ServerNet router 1. A model of ServerNet router that, in an HP NonStop™ S-series server,
has a total of six input and six output ports. See also ServerNet router 2.
ServerNet router 2. A model of ServerNet router that, in an HP NonStop™ S-series server,
has a total of twelve input and twelve output ports. See also ServerNet router 1.
ServerNet subdevice. An I/O device that sends and receives its information through a
controlling device that acts as the ServerNet device for routing purposes.
ServerNet subdevice ID. The low-order (least significant) bits of a ServerNet ID, used by a
ServerNet device to distribute incoming and outgoing information between itself and its
associated subdevices.
ServerNet switch. A point-to-point networking device that connects ServerNet nodes to a
single fabric (X or Y) of the ServerNet communications network. The ServerNet switch
routes ServerNet packets among these nodes.
ServerNet II Switch. A 12-port network switch that provides the physical junction point to
enable an HP NonStop™ S-series server to connect to a ServerNet cluster. The
ServerNet II Switch is a component of the HP NonStop™ Cluster Switch (model 6770).
ServerNet transaction. The bidirectional, successful transmission of a pair of ServerNet
packets between two ServerNet devices. The device that originates the transaction
sends a request packet, and the device that receives the request returns a response
packet. See also request packet and response packet.
ServerNet wide area network (SWAN) concentrator. (1) An HP data communications
peripheral that provides connectivity to an HP NonStop™ S-series server. The SWAN
concentrator supports both synchronous and asynchronous data over RS-232,
RS-449, X.21, and V.35 electrical and physical interfaces. (2) A collective term for
both SWAN concentrators and SWAN 2 concentrators when a distinction between the
two is not required.
ServerNet wide area network (SWAN) 2 concentrator. An HP data communications
peripheral that provides connectivity to an HP NonStop™ S-series server. The SWAN
2 concentrator supports both synchronous and asynchronous data over RS-232,
RS-449, X.21, and V.35 electrical and physical interfaces. The SWAN 2 concentrator
is the next-generation SWAN concentrator and has 12 WAN ports.
service connection. A connection between the Compaq TSM client software running on a
system console and the TSM server software running on an HP NonStop™ S-series
server. A service connection can be used only to communicate with the server when
the HP NonStop™ Kernel operating system is running. A service connection provides
a comprehensive service and maintenance picture of the server and is used to perform
most service management tasks. See also low-level link.
service equipment. The necessary equipment, usually consisting of circuit breakers and
their accessories, that is located near the entrance point of supply conductors. This
equipment constitutes the main control and cutoff means of the supply.