Windows Server 2019 – Redundancy in Windows Server 2019

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Multiply that by two. This is a phrase I hear all the time when planning rollouts for work. I’m sure you have as well. Any time you are rolling out a new technology, you want to plan that rollout very carefully. Figure out what servers you need, where they need to be placed, and how the networking needs to be configured for those guys. Once the planning is done, order two of everything, in case one breaks. We live in a world of always-on technology. Services going down is unacceptable, particularly if we are hosting cloud or private cloud services. Really, any application or service that our users depend on to get their work done is mission-critical, and needs 100% uptime, or darn close to it. The problem with redundancy is that it’s much easier to talk the talk than to walk the walk. Maybe one day we will be blessed with a magic Press here to make this server redundant button  but today is not that day. We need to understand the technologies that are available to us that enable us to provide redundancy on our systems. This chapter will introduce us to some of those technologies. This book is focused on Server 2019 used on-premise, so the technologies we will discuss today are the ones that you can utilize in your own local data centers, on the real (physical or virtual) servers that you are responsible for building, configuring, and maintaining yourself. Yes, the cloud can provide us with some magical scalability and redundancy options, but those are easy, and often we don’t even need to understand how they work. When we are using our own servers within our own walls, how can we add some increased reliability to our systems?

We will cover the following topics cover in this chapter:

  • Network Load Balancing (NLB)
  • Configuring a load-balanced website
  • Failover clustering
  • Clustering tiers
  • Setting up a failover cluster
  • Recent clustering improvements in Windows Server
  • Storage Spaces Direct (S2D)

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