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back to article Rackspace catches up to Amazon... four years later: Say hi again to auto-scale

Rackspace has announced the general availability of "Auto Scaling" technology for its public cloud, catching up with Amazon which implemented the tech in 2009. Auto Scaling is a crucial component of any cloud, as it allows new resources to be allocated to live virtualized servers in real-time in response to demand, and without …

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"allows new resources to be allocated to live virtualized servers in real-time in response to demand, and without the need for a shutdown"

AWS auto scaling allows additional instances to be launched based on various triggers - it does not, as the article suggests, allow individual instances to have additional compute (CPU or RAM) added.

Would be a great feature if available, but certainly it is not offered by Amazon.

You can relaunch an image as a different size, but this does need a reboot.

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