NonStop System Glossary

RFI
See radio frequency interference (RFI).
ride through period (RIDE_THRU)
The normal processing time allotted before processes are quiesced in preparation for
MEM_BACKUP.
RIPC
See remote interprocessor communication (RIPC).
RISC
See reduced instruction-set computing (RISC).
RISC instructions
See MIPS RISC instructions.
RISC processor
An instruction processing unit (IPU) that is based on reduced instruction-set computing (RISC)
architecture. TNS/R processors contain RISC processors.
rld library
A library that loads position-independent code (PIC) programs and their associated dynamic-link
libraries (DLLs). The rld library also provides the dlopen(), dlclose(), dlresultcode(),
dlsys(), and dlerror() functions.
RMAF
See requester missed address file (RMAF).
rms
See root mean square (rms).
robot
A media-changer device that transfers a tape cartridge to a tape drive for use and then returns the
cartridge to the storage cell.
root
See root fileset and root directory. See also super ID.
root directory
In the Open System Services (OSS) file system and Network File System (NFS), a directory associated
with a process that the system uses for pathname resolution when a pathname begins with a slash
(/) character.
root fileset
For the Open System Services (OSS) file system, the fileset with the device identifier of 0, normally
containing the root directory. HP recommends that this fileset be named root.
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