| bool "Reliability, Availability and Serviceability (RAS) features"
| Reliability, availability and serviceability (RAS) is a computer
| hardware engineering term. Computers designed with higher levels
| of RAS have a multitude of features that protect data integrity
| and help them stay available for long periods of time without
| Reliability can be defined as the probability that the system will
| produce correct outputs up to some given time. Reliability is
| enhanced by features that help to avoid, detect and repair hardware
| Availability is the probability a system is operational at a given
| time, i.e. the amount of time a device is actually operating as the
| percentage of total time it should be operating.
| Serviceability or maintainability is the simplicity and speed with
| which a system can be repaired or maintained; if the time to repair
| a failed system increases, then availability will decrease.
| Note that Reliability and Availability are distinct concepts:
| Reliability is a measure of the ability of a system to function
| correctly, including avoiding data corruption, whereas Availability
| measures how often it is available for use, even though it may not
| be functioning correctly. For example, a server may run forever and
| so have ideal availability, but may be unreliable, with frequent
| data corruption.