1.' David Bailey says:

    Good points Derek.

    The need for a resilient off-site backup-for-the-backup strategy is too clearly evident in the current disaster in Japan. The two backup power options for the nuclear plant cooling systems now in trouble were all knocked out in the earthquake and tsunami. It’s clear that on-sight backups are not sufficient to avert major disasters.

    Lesson from the Christchurch earthquake: “on-sight backup” now includes in the same city.

    Lesson from the Japan earthquake and tsunami: “on-sight backup” includes same province.

    Perhaps, “off-sight” now means a different country, or maybe two? Or three? It depends on how important the data, power, resource is.

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