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RAID
request rate
route
routing
RR_TOV
RSCN
SAN
SDRAM
sequence
service rate
single mode
SNMP
SNS
switch
84
Glossary
Redundant Array of Independent Disks. A collection of disk
drives that appear as a single volume to the server and are
fault tolerant through mirroring or parity checking.
The rate at which requests arrive at a servicing entity.
With respect to a fabric, the communication path between two
switches. May also apply to the specific path taken by an
individual frame from source to destination.
The assignment of frames to specific switch ports according to
frame destination.
Resource recovery time-out value. The minimum time a target
device in a loop waits after a LIP before logging out a SCSI
initiator.
Registered state change notification. A switch function that
allows notification of fabric changes to be sent from the switch
to the specified nodes.
Storage area network. A network of systems and storage
devices that communicate using FC protocols.
Synchronous dynamic random access memory. The main
memory for a switch. See also switch.
A group of related frames transmitted in the same direction
between two N_ports.
The rate at which an entity can service requests.
The fiber optic cabling standard that corresponds to distances
up to 10 km between devices.
Simple Network Management Protocol. An Internet
management protocol that uses either IP for network-level
functions and UDP for transport functions, or TCP/IP for
both. SNMP can be made available over other protocols
(such as UDP/IP) because it does not rely on the underlying
communication protocols. See also MIB,
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 a directory service.
Hardware that routes frames according to FC protocol and is
controlled by software.
trap
(SNMP).
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