I spent many years as an IT consultant, with many projects surrounding business continuity planning and disaster recovery.

Frequently, IT staff would ask me what to do if and when decision-makers refused to invest sufficiently in infrastructure or redundancy. My response was always the same: "Tell them, in writing, what it is you must do to provide the redundancy that they ask for. Tell them what you must do to provide the PROPER redundancy. When you have an outage, point to the document you wrote." This resulted in a number of consulting engagements where I would be paid to review or write such documents.