| slovo | definícia |
failover
(foldoc) | failover
failback
Automatically switching to a different, redundant
system upon failure or abnormal termination of the currently
active system. Failover can be applied to a cluster of
servers, to network or storage components or any other set of
redundant devices that must provide high availability because
down-time would be expensive or inconvenient. It may be
implemented in hardware, software or a combination.
A "hot standby" is continuously active at the same time as
the failed system, using some kind of load balancing to
share the work, whereas a "warm standby" is ready to become
active at short notice.
When the failed system is operational again it may "failback",
i.e. become (one of) the active system(s) or it may become a
warm standby.
(2008-01-15)
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