I am intrigued by the progress made in virtualization and the publicized benefits of such. The 20 or so pages presented in this chapter was somewhat informative since I have never really been exposed to the technology. The reading is getting my interest in pursuing some options with virtualization. As I have other questions concerning virtualization, I am going to divert away from the actual content of the reading.
Is virtualization really as good as it is made out to be? The hype is definitely taking the industry by storm as one way to be more energy efficient and give an opportunity for applications play in their own "sandbox" without disturbing the other kids. I really do not have any experience with virtual machines except with the web hosting company who hosts websites for me. I have heard about sluggishness on laptops and desktops running VMWare. Does Xen experience the same issues?
Where is the cost savings that is being promoted when switching to virtualization? Yes, you can possibly reduce the hardware footprint of 10 HP DL380 servers down to 1 virtual host manager with 10 virtual machines. What is the minimum hardware requirement in order to virtualize 10 Linux servers on one host? How many CPUs and amount of memory will you need to maintain acceptable operating environments? Poor performance and latency is not ideal or an acceptable situation.
Would virtualization be an ideal situation for setting up a "development farm" for 10 developers all running Eclipse with a few virtual nodes running Oracle or MySQL? Can you create a database cluster across virtual nodes?
Just some thoughts, ideas, and questions to ponder...
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