Connectivity relies on power as part of a preparedness & recovery plan.
For portable devices a spare battery, external data storage and a power-cord may be acceptable “in a pinch”, you expect more for your business. With a fault-tolerant system that includes an uninterruptible power supply (UPS) by and data cloud backup you are able to deliver “Components of Continuous IT Availability & Disaster Tolerant Computing” as described by IEEE in an environment where being disconnected is intolerable.
On schedule or in times of trouble, backup systems serve a primary purpose: system stability.
A failover system works for you in many ways. Microsoft reports that “Three forms of fail over exist: automatic fail over (without data loss), planned manual fail over (without data loss), and forced manual failover (with possible data loss), typically called forced failover. Automatic and planned manual fail over keep all your data.” — they also give a boost when you need to offer high-volume throughput that you would not otherwise be able to carry out.
Continuity includes conversation.
Most times you will realize yourself when something isn’t working correctly; other times it may be your clients who point out the problem. Assess all aspects of your technology and create a continuity plan to implement (automatically when possible) should the technology fail. Test out the plan and make sure everyone is aware what the plans are should the event ever occur.