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

Glossary
HP NonStop S-Series Server Description Manual—520331-003
Glossary-83
remote system
remote system. An active ServerNet node to which the local system has active external
ServerNet paths. Contrast with local system.
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.
reserved symbol. An identifier that is reserved for use by system or compiler language
implementors.
resistance. The measure of opposition 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 together 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 the HP 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.
RFI. See radio frequency interference (RFI)
.
RIPC. See remote interprocessor communication (RIPC).
RISC. See reduced instruction-set computing (RISC).
RISC processor. An instruction processing unit (IPU) that is based on reduced
instruction-set computing (RISC) architecture. TNS/R processors contain RISC
processors.