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Tag Archive 'N+1'

What’s the “N” in N+1 High Availability?

Posted in High Availability on Mar 5th, 2007

Many virtualization solutions running on distributed systems claim the ability to automatically move an application between processing resources in the case of a hardware or application failure. This eliminates the 1:1 mapping for high availability (for every active server there is a corresponding active/passive server) and therefore creates N+1 high availability.

That’s great but what is [...]

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N+1 DR: The 72 hour rule is now 15 minutes (for multiple datacenters)

Posted in Disaster Recovery on Feb 9th, 2007

A flu pandemic…it’s almost beyond comprehension in this day and age. But it’s a very real concern. The CDC has made recommendations in response to outbreaks of a feared flu pandemic. For a category 5 pandemic, the CDC recommends closing schools for 1-3 months. Think about that for a minute…imagine the impact something like this [...]

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