NonStop System Glossary

ServerNet switch Standard I/O
A ServerNet switch in the HP BladeSystem c7000 or c7000 CG enclosure of NonStop BladeSystems
and NonStop Carrier Grade BladeSystems. A ServerNet switch Standard I/O contains three quad
optic modules for a total of 12 ServerNet links.
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 a NonStop 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 a NonStop 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.
ServerNet/DA
See ServerNet device adapter (ServerNet/DA).
ServerNet/FX adapter
A ServerNet adapter that logically extends the ServerNet X and Y fabrics to other clusters in a
Fiber Optic Extension (FOX) ring by using fiber-optic lines. Two 6740 ServerNet/FX adapters are
used, one for the X ring and one for the Y ring.
ServerNet/FX 2 adapter
A ServerNet adapter that logically extends the ServerNet X and Y fabrics to other clusters in a
Fiber Optic Extension (FOX) ring by using fiber-optic lines. Two 6742 ServerNet/FX 2 adapters
are used, one for the X ring and one for the Y ring.
service connection
A connection between the TSM client software running on a system console and the TSM server
software running on a NonStop S-series server. A service connection can be used to communicate
with the server only when the NonStop 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.
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