standby computer

standby computer

[′stand¦bī kəm‚pyüd·ər]
(computer science)
A computer in a duplex system that takes over when the need arises.
References in periodicals archive ?
If a standby computer has to be temporarily "rolled" into the workstation, time is wasted maneuvering it into location (most often into cramped areas) and connecting it.
Data vaulting differs from Disaster Recovery in that a DR site usually has a standby computer ready to assume a processing role, usually during the restore activity.
As soon as the standby computer detects a problem with the master computer, it immediately takes over the control of the process.