Capacidad de
un sistema para continuar prestando un servicio activamente bajo condiciones
adversas. Se consideran tanto desastres naturales, como accidentes y ataques
deliberados.
(I) The ability
of a system to remain in operation or existence despite adverse conditions,
including natural occurrences, accidental actions, and attacks. (Compare:
availability, reliability.) [RFC4949:2007]
The capability of
a system to fulfill its mission, in a timely manner, in the presence of
attacks, failures, or accidents.
Timeliness is a critical factor that is typically included in (or
implied by) the very high-level requirements that defines mission. However, timeliness is such an important
factor that we include it explicitly in the definition of survivability. It is important to recognize that is it the
mission fulfillment that must survive, not any particular subsystem to fulfill
its mission, even if significant portions of the system are damaged or
destroyed. We will sometimes use the
term survivable system as a less than perfectly precise shorthand for a system
with the capability to fulfill a specified mission in the face of attacks,
failures, or accidents.
http://www.qtsnet.com/SecuritySolutions/security_glossary.html
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