"backup machine" is a correct and usable phrase in written English.
It can be used to refer to an alternate or extra machine used as a backup in case of a failure or malfunction of the main machine. Example: The IT department had a backup machine ready in case the main server crashed.
Nineteen scanners jammed, mostly by wet ballots, and each time, a backup machine was brought in.
What happens if your hospital has fully converted to digital X-rays and doesn't have an analog backup machine lying around?
The militia fighters were worse than useless: They didn't try to stop the attack on the mission, and they didn't answer the CIA base chief's pleas a few minutes later for backup machine guns.
These services are hosted on a single physical machine, with a backup machine isolated to the same network switch.
The operating system is already pretty solid, but there are bugs, and it's probably best to install this on a backup machine or a separate partition of your main device just to be safe.
Though Philpott said the water is not the issue, Friday said the community's water treatment plant is holding on by a thread, with the reserve relying on an emergency backup machine to filter their water.
Instead, these systems are supposed to be highly reliable backup machines for businesses.
AS hard drives have grown larger over the years, the need for even bigger drives to serve as backup machines has kept pace.
If the SAN servers are represented as "machines", this system can be solved by using the stochastic maintenance model with main unreliable and random auxiliary spare (remote backup) machines, subject to random breakdowns, repairs, and two replacement policies: one for busy and another for idle or vacation periods.
The problem typically happens when the backup MX machine (the one with the higher number) forgets that it is supposed to accept mail for the primary domain.
The paper ballots also served as a backup for machine failures.
