Chapter 33. Server Upgrades

This chapter is focused on the specific task of upgrading the operating system of a single host. This task is deceptively simple, although it requires a lot of preparation beforehand and a lot of testing afterward. This technique is a building block, which can be applied to many similar situations. Later we’ll move on to larger upgrade projects, such as those described in Chapter 34, “Maintenance Windows.”

The upgrade itself can be performed in many ways, but there are two main strategies for upgrades: Upgrade the host in-place or build a new machine and migrate clients to it. Depending on the services being provided by the machine and the facilities available in an organization, the SA needs to choose one of these ...

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