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resource recovery timeout value (RR_TOV). The
minimum time a target device in a loop waits after a
loop initialization primitive (LIP) before logging out a
small computer systems interface (SCSI) initiator. See
also error detect timeout value and resource allocation
timeout value.
RISC. See reduced instruction set computer.
ROM. See read-only memory.
route. The path that network traffic follows from its
source to its destination. See also Fibre Channel
shortest path first.
routing. The assignment of the path by which a
message is to reach its destination.
RPC. See remote procedure call.
RR_TOV. See resource recovery timeout value.
RSCN. See registered state change notification.
SAN. See storage area network.
SCSI. See small computer systems interface.
SCSI Enclosure Services (SES). A subset of the
small computer systems interface (SCSI) protocol used
to monitor temperature, power, and fan status for
enclosure devices.
Secure Fabric OS. An optionally-licensed software
product that runs on top of the Fabric OS and provides
customizable security restrictions through local and
remote management channels on a switch.
sequence. A group of related frames transmitted in the
same direction between two node ports (N_ports).
service rate. The rate at which an entity can service
requests. See also request rate.
SES. See SCSI Enclosure Services.
SFP. See small form-factor pluggable.
short wavelength (SWL). A type of fiber optic cabling
that is based on 850-mm lasers and supports 1.0625
Gbps link speeds. SWL can also refer to the type of
gigabit interface converter (GBIC) or small form-factor
pluggable (SFP). See also long wavelength.
SID. See source ID.
simple name server (SNS). A switch service that
stores names, addresses, and attributes for up to 15
minutes, and provides them as required to other devices
in the fabric. SNS is defined by Fibre channel standards
and exists at a well-known address. See also Fibre
Channel service.
simple network management protocol (SNMP). In
the Internet suite of protocols, a network management
protocol that is used to monitor routers and attached
networks. SMNP is an application layer protocol.
Information on devices managed is defined and stored
in the application’s Management Information Base
(MIB).
single mode. A type of optical fiber, typically used with
gigabaud link modules incorporating longwave lasers.
Typically used for long-distance links up to 10 km (6.21
mi).
small computer systems interface (SCSI). A
standard hardware interface that enables a variety of
peripheral devices to communicate with one another.
small form-factor pluggable (SFP). An optical
transceiver used to convert signals between optical fiber
cables and switches.
SNIA. Storage Network Industry Association.
SNMP. See simple network management protocol.
SNMPv1. The original standard for SNMP, now labeled
v1.
SNS. See simple name server.
source ID (SID). The 3-byte source ID of the originator
device, in the 0xDomainAreaALPA format.
storage area network (SAN). A dedicated storage
network tailored to a specific environment, combining
servers, storage products, networking products,
software, and services. See also fabric.
switch. A network infrastructure component to which
multiple nodes attach. Unlike hubs, switches typically
have internal bandwidth that is a multiple of link
bandwidth, and the ability to rapidly switch node
connections from one to another. A typical switch can
accommodate several simultaneous full-link bandwidth
transmissions between different pairs of nodes.
switch name. The arbitrary name assigned to a
switch.
switch port. A port on a switch. Switch ports can be
expansion ports (E_ports), fabric ports (F_ports), or
fabric loop ports (FL_ports).
SWL. See short wavelength.
target. A storage device on a Fibre Channel network.
See also initiator.
TCP. See Transmission Control Protocol.
tenancy. The time from when a port wins arbitration in
a loop until the same port returns to the monitoring
state. Also referred to as loop tenancy.
throughput. A measure of the amount of information
transmitted over a network in a given period of time. For
Glossary
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