Search results
Results from the WOW.Com Content Network
The other unit is a hot-standby or a hot spare unit, ready to take over if the master unit fails. When the master unit fails, an automatic failover to the hot spare occurs within a very short time and the outputs from the hot spare, now the master unit, are delivered to the controlled devices and displays.
Shutdown is the state of a nuclear reactor when the fission reaction is slowed significantly or halted completely. Different nuclear reactor designs have different definitions for what "shutdown" means, but it typically means that the reactor is not producing a measurable amount of electricity or heat and is in a stable condition with very low reactivity.
Configurations can also be defined with active, hot standby, and cold standby (or idle) subsystems, extending the traditional “active+standby” nomenclature to “active+standby+idle” (e.g. 5+1+1). Typically, “cold standby” or “idle” subsystems are active for lower priority work.
The term "failover", although probably in use by engineers much earlier, can be found in a 1962 declassified NASA report. [2] The term "switchover" can be found in the 1950s [3] when describing '"Hot" and "Cold" Standby Systems', with the current meaning of immediate switchover to a running system (hot) and delayed switchover to a system that needs starting (cold).
Different sub-levels of SAFSTOR are recognized, which vary in the type of activity and monitoring required. [3]In "hot/cold standby" the plant is kept in operating condition but not actively delivering power; monitoring and maintenance is similar to that during a long outage.
The first thing you should know about cold brew is implied in the name: There’s no hot water involved. Instead, you’re using steeping coarsely ground coffee in room temperature water for an ...
It is also common to mix live (hot) redundancy where UPSes are online, and cold standby redundancy where they are offline until needed. The reason for this, in the case of UPSes, is that a common failure mode is component's end-of-life failure, and if UPSes are equally used, then they are highly likely to fail within a short space of time of ...
No, heated outdoor cat houses are designed to be energy-efficient. Most use low-wattage heating pads, typically consuming between 10 to 40 watts — about the same as a small light bulb.