McDATA Sphereon 4500 Manual de usuario Pagina 206

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McDATA® Sphereon 4500 Fabric Switch Product Manager User Manual
Glossary
R
R_A_TOV See resource allocation time-out value.
redundancy Performance characteristic of a system or product whose integral
components are backed up by identical components to which
operations will automatically failover in the event of a component
failure. Redundancy is a vital characteristic of virtually all
high-availability (24 hr./7 days per week) computer systems and
networks.
redundant FRU SFP LC transceivers, power supplies, and cooling fans that can be
removed or replaced without disrupting switch or Fibre Channel link
operation.
remote access link Connection to a device or program on a computer network via a
(geographically) remote workstation.
remote notification A process by which a system is able to inform remote users and/or
workstations of certain classes of events that occur on the system.
E-mail notification and the configuration of SNMP trap recipients are
two examples of remote notification programs that can be
implemented.
remote user
workstation
Workstation, such as a PC, using EFC Manager and Product Manager
software that can access the EFC Server over a LAN connection.
rerouting delay Enabling rerouting delay ensures that frames are delivered in order
through the fabric to their destination. If there is a change to the fabric
topology that creates a new path (for example, a new switch is added
to the fabric), frames may be routed over this new path if its hop
count is less than a previous path with a minimum hop count. This
may result in frames being delivered to a destination out of order
since frames sent over the new, shorter path may arrive ahead of
older frames still in route over the older path.
resource allocation
time out value
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.
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