On 10/25/2011 8:55 AM, Claudio Freire wrote:
> But what about unexpected failures. Faulty electronics, stuff like
> that? I really don't think a production server can work without at
> least raid-1.
Same approach : a server either works or it does not. The transition
between working and not working may be expected or not expected. The
solution is the same : use another machine to perform the work the now
not working machine was doing. The big benefit of this approach is that
you now do not need to worry about specific kinds of failure or
individual components, including storage.
If it helps, think of this architecture as raid-1, but with the whole
machine being the "drive" rather than individual storage devices.