Nah, a collection of computers with high-availability setup communicating with another collection constantly over a dedicated or high-bandwidth line. In the demo, it was 5 racks in an open field. In the bank study, it was a whole bank's worth of computers in two locations. For some organizations, it's 5+ of them just to be sure.
The common trend is that the systems constantly sync critical data, can detect downtime, and automatically (or manually) fail-over when it occurs. Been OS's and ISV's offering that capability with many proven in field going back decades. Certain high-tech companies just don't apply those for whatever reasons. Maybe their stacks just still don't have that feature.
The common trend is that the systems constantly sync critical data, can detect downtime, and automatically (or manually) fail-over when it occurs. Been OS's and ISV's offering that capability with many proven in field going back decades. Certain high-tech companies just don't apply those for whatever reasons. Maybe their stacks just still don't have that feature.