The owner is the
only one qualified to determine how much downtime or data loss is acceptable. That ties
in closely with cost; usually the business side of the equation wants to see zero data loss
and zero downtime. This is often an extremely costly goal to achieve. If you don??™t put cost
into the equation from the beginning, it??™s unlikely you??™ll get approval for the cost when it
comes time for implementation.
This list is still a little vague, but I??™ll make things clearer in Chapter 12 when I discuss
overall disaster recovery planning.
CHAPTER 1 n WHAT IS DISASTER RECOVERY? 2
Disaster Recovery, High Availability,
and Business Continuity
These three terms sometimes are used interchangeably and often have ???floating??? definitions.
Of the disaster recovery planning projects I??™ve seen that have failed (or at best,
limped), the primary reason for the failure was a lack of consensus as to what the project
was trying to accomplish. What usually happens is that the basic disaster recovery portion
of the project gets a severe case of scope creep, followed by mass confusion and
unrealistic expectations.
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