NonStop System Glossary

remote system
An active ServerNet node to which the local system has active external ServerNet paths. Contrast
with local system.
rendezvous
A distributed operation that exchanges data to achieve synchronization among the processor
elements of a logical processor.
request packet
A ServerNet packet sent from one ServerNet device to another, requesting either a read action or
a write action on the part of the receiving device. In the case of a write request, the packet contains
the data to be written. The receiving device is expected to take the appropriate action and return
a response packet to the device that sent the request packet. See also response packet, ServerNet
packet, and ServerNet transaction.
requester missed address file (RMAF)
A file used by the NonStop operating system during memory-caching operations.
reserved symbol
An identifier that is reserved for use by system or compiler language implementors.
resistance
The measure of noninductive or capacitive opposition (impedance) to current that limits the amount
of current that can be produced by an applied voltage. Conductors have very little resistance;
insulators have a large amount of resistance. Resistance is measured in ohms.
resource
A component of a computer system that works with other components to process transactions.
Terminals, workstations, processors, memory, disk drives, processes, files, and applications are
examples of resources.
response
The information or confirmation supplied by a subsystem in reaction to a command. A response
is typically conveyed as one or more interprocess messages from a subsystem to an application.
response packet
A ServerNet packet returned from one ServerNet device to another, responding to an earlier
received read request or write request. In the case of responding to a read request, the response
packet contains the data that the requesting device wanted to have read. See also request packet,
ServerNet packet, and ServerNet transaction.
RESTORE
A utility for NonStop servers that copies files from a backup tape to disk. See also BACKUP.
RFC
Request for Comments. Documents compiled by number by the Internet Engineering Task Force
(IETF) that define standards for intercommunication.
R 159