The Next Quality Attribute Is Reliability

Reliability is defined solely by the mean time to failure, how often a failure occurs in your system. If you have a system that fails every hour but automatically re boots using some kind of watch dog, and the reboot boot only takes a second, then you probably don't have a problem. There are many, or at least several, embedded systems which do crash from time to time, but their rebootinga time is so quick that the availability is still very high,. Am?