HA cluster implementations attempt to use redundancy of cluster components to eliminate single points of failure.

And of course they use RAID and redundancy and so forth.

Ordinary computers can protect against this by using redundancy.

These devices are typically built using internal redundancy.

Some communication systems use N-modular redundancy as a simple form of forward error correction.

Computer engineers also use redundancy.

We can use redundancy to control replicators.

Most RAID levels that use redundancy can do this.

There is evidence that men are taking early retirement or using redundancy to take on a caring role (Green, 1988).

It is an example of using redundancy to increase safety and reduce the likelihood of failure, analogous to double insulation.