Which type of disaster-recovery site provides immediate failover with minimal downtime by maintaining a fully operational duplicate of the primary environment?
A hot site is a fully equipped and continuously synchronized duplicate of the primary environment. Because systems and data are already online and up-to-date, operations can shift to the hot site almost instantly, resulting in minimal downtime. Warm sites have some equipment in place but require additional configuration and data restoration, so recovery takes longer. Cold sites provide only basic facilities with no preinstalled systems, leading to the slowest recovery. Offsite tape backups offer data protection but no ready-to-run infrastructure at all.
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What is the difference between a hot site and a warm site in disaster recovery?
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How does a hot site stay synchronized with the primary environment?
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What are the cost trade-offs of using a hot site versus a cold site?