BC and DR are at the top of IT and data center initiatives; usually, improving BC and DR capabilities is the top priority for SMBs and one of the first for an enterprise.

This chapter has described what's behind the normal operation and maintenance, in order to define your BC requirements and match your expected services levels.

Availability, SLA, data and system protection, DR, and other basics concepts were described in this chapter, with a brief introduction to SRM and SR as a solution for DR.

In this chapter, we have introduced some BC concepts, availability, and DR metrics and the differences between availability and DR.

In the next chapters, we will give more details on availability and data protection solutions.