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The ultimate preparation for a disaster is to have fully redundant versions of everything that can take over when the primary version fails. In other words, have a redundant site with redundant systems. In this section, we look at having a redundant site and some ways a company might be able to make that site more cost-effective.
Although this sounds expensive, in large companies, especially banks, having a redundant site is a minimum. In fact, large companies have stopped using the term disaster recovery and instead use the term contingency planning or business continuity planning.