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YOU ARE HERE: HOME Questions What is difference between scale up and scale out



Scale Up vs. Scale Out

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What is difference between scale-up and scale-out?

Answer 1)

Scale vertically (scale up)
To scale vertically (or scale up) means to add resources to a single node in a system, typically involving the addition of CPUs or memory to a single computer. 

Scale horizontally (scale out)
To scale horizontally (or scale out) means to add more nodes to a system, such as adding a new computer to a distributed software application. An example might be scaling out from one web server system to three web server systems. (ex: web farm scenario)

  Asked in:  SemanticSpace Technologies   Expertise Level:  Experienced
  Last updated on Saturday, 17 December 2011
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