HP StorageWorks Fabric OS 5.0.0 Fabric Watch User Guide (AA-RW1TA-TE, May 2005)

Glossary118
RR_TOV
Resource recovery time-out value. The minimum time a target device in a loop waits
after a LIP before logging out a SCSI initiator.
RSCN Registered state change notification. A switch function that allows notification of fabric
changes to be sent from the switch to specified nodes.
S
SAN Storage Area Network. A network of systems and storage devices that communicate
using fibre channel protocols.
SDRAM The main memory for the switch.
sequence A group of related frames transmitted in the same direction between two N_Ports.
service rate The rate at which an entity can service requests.
single mode The fiber optic cabling standard that corresponds to distances of up to 10 km between
devices.
SNMP Simple Network Management Protocol. An internet management protocol that uses
either IP for network-level functions and UDP for transport-level functions, or TCP/IP for
both. Can be made available over other protocols, such as UDP/IP, because it does
not rely on the underlying communication protocols.
SNS Simple Name Server. 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. May
also be referred to as directory service.
switch Hardware that routes frames according to fibre channel protocol and is controlled by
software.
switch port A port on a switch. Switch ports can be E_Ports, F_Ports, or FL_Ports.
SWL Short wavelength. A type of fiber optic cabling that is based on 850mm lasers and
supports link speeds up to 2 Gbit/sec. May also refer to the type of transceiver.