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Glossary
g-43
Glossary
repeater A device that generates and often amplifies signals to extend trans-
mission distance.
rerouting delay An option that ensures that frames are delivered in order through the
fabric to their destination.
resource allocation
time-out value
R_A_TOV. R_A_TOV is a value used to time-out operations that
depend on the maximum possible time that a frame could be delayed
in a fabric and still be delivered.
RFI See radio frequency interference.
ROM See read-only memory. Contrast with random access memory.
router An attaching device that connects two local area network (LAN) seg-
ments, which use similar or different architectures, at the reference
model network layer (D). Contrast with bridge.
RS-232 The Electronic Industry Association (EIA)-recommended specifica-
tion for asynchronous serial interfaces between computers and com-
munications equipment. It specifies both the number of pins and type
of connection, but does not specify the electrical signals (D).
S
S/390 mode The mode that is most useful when attaching to IBM S/390 Enterprise
Servers. See also open systems mode; operating mode.
SA/MVS™ See System Automation for Operating System/390.
SAN See storage area network; system area network.
SANavigator SANavigator management software provides easy, centralized man-
agement of a SAN and quick access to all device configuration appli-
cations.
SANavigator Server The computer that is hosting the SANavigator application. Multiple
client systems can log in to the Server to utilize the application. See
also EFC Server.
SA OS/390™ See System Automation for Operating System/390.