HIPAA requirements seem to state that a disaster recovery plan is a required implementation, defined within the HIPAA Contingency Plan standard in the Administrative Safeguards section of the HIPAA Security Rule.
What about if the application in question is non mission critical, uses a copy of the system of record and not the original, and if it becomes unavailable will not affect the core services of a healthcare entity? In other words is HIPAA saying that if I have a healthcare business and I create a small application to improve an internal business process that uses an extract of my core ePHI database that I must provide a DR plan and make that tiny application fully recoverable at great expense?