How come Virtual Machines are ugly? Well, each VM needs its own Operating System. And Operating Systems consume resources! Remember, our ultimate goal is to run multiple applications on a physical machine, not to install multiple Operating Systems on a physical machine. Put another way, the Operating System only exists to facilitate the application – if we didn’t *need* the Operating System, we would get rid of it. Let’s face it, nobody is bragging about the number of Operating Systems their company has, or how more Operating Systems = more value for the business! Every Operating System consumes system resources (overhead) – disk space, disk IOPS, RAM, CPU cycles….. They all need patching, and some of them need anti-virus. I love Operating Systems, but in these cases more is not better. So while the Virtual Machine model was an improvement over the one-physical-machine-per-application model. It’s far from a thing of beauty. Far too much waste
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