SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/secplus-hot-site-fastest

Which alternate processing site is fully equipped and ready to take over with the shortest setup time?

A hot site: configured with the necessary hardware, infrastructure and support personnel.

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  1. Hot site ✔
  2. Cold site
  3. Warm site

Why: A hot site is already built to run your systems, so failover is fast. That speed costs more. Cold sites are cheapest but need lots of time to bring in equipment.

Huh, didn't know that: NIST ranks a mirrored site as the most expensive option, ensuring virtually 100 percent availability.

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Our hot site is so ready, it keeps a toothbrush plugged in.
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References

Answer: Hot site. A hot site is already built to run your systems, so failover is fast. That speed costs more. Cold sites are cheapest but need lots of time to bring in equipment.

  1. NIST SP 800-34 Rev. 1, Contingency Planning Guide for Federal Information Systems nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-34r1.pdf
    Hot Sites are facilities appropriately sized to support system requirements and configured with the necessary system hardware
    Checked 2026-10-10.
  2. NIST SP 800-34 Rev. 1, Contingency Planning Guide for Federal Information Systems nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-34r1.pdf
    the mirrored site is the most expensive choice, but it ensures virtually 100 percent availability
    Checked 2026-10-10.

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