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Building VMware Software-Defined Data Centers by Valentin Hamburger

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Radical new IT approach

DevOps is a radical and disruptive way of doing IT. It focuses on applications and it tends to ignore hardware beneath the app. This sounds harsh compared to the classic IT approach where servers and the OS is in focus in order to provide a good, secure, and scalable environment for the applications.

In DevOps, applications become stateless since they store the data elsewhere; that might be an object-based storage or a NAS/SAN mount into the container. This means the container can spin up wherever it needs to be, given that it can access its data. There is no means in patching containers - just the container definition (the package) will be updated. To deploy this patch the old container will be destroyed and a new container ...

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