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vSphere Design Best Practices by Christopher Kusek, Brian Bolander

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Ensuring high availability and application resiliency

Once you have an established business critical application, the sole function of your infrastructure beyond this point is not only to ensure that it operates within the performance thresholds you designed it for; it is to ensure that it remains up at all times. VMware has multiple features to help ensure that your service continues to operate even when things start to fail, starting with VMware vSphere High Availability (HA), which is a feature that protects against OS or hardware failure. That means, should your VM fail or the ESXi host it resides on fail, the virtual machine will be restarted on another host. This is similar to how Microsoft Clustering is used to protect against hardware ...

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