In short, a systems continuity plan is a subset of a much larger business continuity plan.   Business Continuity Management (BCM) is a business driven issue that "unifies a broad spectrum of business and management disciplines " to identify potential impacts that threaten the organization.

The table below shows the spectrum of Business Continuity Management (BCM).

Business Continuity Management BCM stresses four to five major points: 1) understand the business; 2) understand the threats to the business; 3) understand the risks of the business and 4) analyze the triggers to those threats.  5) The building of; and implementation / training of, a series of plans prepared for dealing with those threats.

If this is BCM, then what is SCM or Systems Continuity Management?

SCM is the IT focus on supporting the systems and data that make up the business.   In today's business - 90+ % of all business depend on some form of computer or information technology to run the business.  Even if the owner does not use a computer, they have some form of interaction with a computer system that their business depends on.  (i.e. credit card processing, banking, order entry, etc) 

Where BCM deals with the overall business' continuity and recovery needs, SCM deals specifically with the technology support aspects of those needs. Putting the two side by side, and you get a picture that looks like this.  .

Where we as a full service consulting firm excel is that we cover both ends of the requirements for full continuity planning including the software to manage both aspects.