1. The cables are fed through two redundant carrier rooms at opposite ends of the building.

2. The status of those redundant systems is not clear.

3. Instead of putting full copies of all the data on disks, Facebook made the data redundant virtually.

4. The disruption occurred when two separate, redundant network paths stopped working at the same time.

5. To reduce the risk radiation may pose, Orion has three redundant computers onboard.

6. There are simply too many redundant options.

7. This manual data input process is redundant, inefficient, and leaves room for error.