What precautions or steps are supposed to be critically looked into when dealing with disaster recovery plan and data backup?

Whenever you are making disaster recovery plan you must plan for your electricity back up. Use multiple generators for power back up. Use surge arrestors in your network. use minimum cable network and it will save you from any mishapening.

Use remote location server for back up of your files. can use cloud computing nowadays. very safe and secure. keep always back up of your data. use latest antivirus along with trojan remover updates. Use firewall .

Keep original hardware and software cd's.