NonStop System Glossary

physical link interfaces

Communications standards defined by standards organizations. These physical link interfaces are

supported for the ServerNet wide area network (SWAN) concentrator: RS-232, RS-442, RS-449,

V.35, and X.21.

Physical view

One of several views of a server available in the view pane of the Management window of the

OSM Service Connection and Low-Level Link and the TSM Service Application and Low-Level Link.

A Physical view of a server is a view of all the enclosures and is intended to represent the actual

floor plan at the site. A Physical view of an enclosure is a visual representation of the physical

placement of supported resources inside the enclosure. See also Connection view.

PIB

See power interface board (PIB).

PIC

1. See plug-in card (PIC).

2. See position-independent code (PIC).

PID

In the Open System Services (OSS) environment, a synonym for process ID. OSS process ID is the

preferred term in NonStop system publications.

In the Guardian environment, PID is sometimes used to mean either:

• A Guardian process identifier such as the process ID.

• The cpu, pin value that is unique to a process within an Expand node. See process

identification number (PIN).

PIF

See physical interface (PIF).

See process identification number (PIN).

ping

A utility used to verify connections to one or more remote hosts. The ping utility uses the Internet

control message protocol (ICMP) echo request and echo reply packets to determine whether a

particular IP system on a network is functional. The ping utility is useful for diagnosing IP network

or router failures.

pipe

In the Open System Services (OSS) environment, an unnamed FIFO, created programmatically by

invoking the pipe() function or interactively with the shell pipe syntax character (|). A shell pipe

redirects the standard output of one process to become the standard input of another process. A

programmatic pipe is an interprocess communication mechanism.

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