From the course: Microsoft Azure Fundamentals (AZ-900) Cert Prep: 3 Azure Services

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Understand virtual machine availability sets

Understand virtual machine availability sets - Azure Tutorial

From the course: Microsoft Azure Fundamentals (AZ-900) Cert Prep: 3 Azure Services

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Understand virtual machine availability sets

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As we know, this is a virtual machine. One VM typically runs one instance of the application. But for enterprise applications, one instance may not always be enough. When a large number of users try to access an application, you would need a greater number of similar VM instances to support user requests. And because these instances belong to the same enterprise application, they would probably be grouped together in the region of your choice. Here's the catch. If by chance all these instances end up being deployed on a single server rack, they become prone to a single point of failure. Server racks share a common power switch and a common networking switch. A failure in either the power or the networking switch can bring down the entire rack of servers. There is redundant power and networking outside the rack, but if the switches in the rack itself fail, it can be problematic. All your VM instances will become unavailable. Virtual machine availability sets help you prevent this from…

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