HP 316095-B21 - StorageWorks Edge Switch 2/24 Service Manual page 303

read-only memory
ROM. An information storage chip with permanent memory. Stored information cannot be
changed or deleted except under special circumstances (D). Contrast with
memory.
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
hours/7 days per week) computer systems and networks.
remote notification
A process by which a system is able to inform remote users and workstations of certain classes
of events that occur on the system. E-mail notification and the configuration of simple network
management protocol (SNMP) trap recipients are two examples of remote notification
programs that can be implemented on director-class switches.
remote user workstation
Workstation, such as a personal computer (PC), using HAFM application and Product
Manager application software that can access the HAFM server over a local area network
(LAN) connection.
repeater
A device that generates and often amplifies signals to extend transmission 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
ROM
See read-only memory. Contrast with
router
An attaching device that connects two local area network (LAN) segments, which use similar
or different architectures, at the reference model network layer (D). Contrast with bridge.
RS-232
The Electronic Industry Association (EIA)-recommended specification for asynchronous
serial interfaces between computers and communications equipment. It specifies both the
number of pins and type of connection, but does not specify the electrical signals (D).
edge switch 2/24 service manual
interference.
random access memory.
Glossary
random access
Glossary–43