By Robert Shimonski
Enforce clustering and cargo balancing suggestions with home windows 2000 and home windows Server 2003, and convey approximately one hundred pc uptime. in accordance with real-world difficulties, the writer grants specified excessive availability recommendations and instruments for troubleshooting.
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Extra resources for Windows Server 2003 Clustering & Load Balancing
Sample text
You learn the intricacies of software and hardware configurations to make the solution work! Seriously, I hope this chapter has been an eye opener to all the things you need to consider before you get to the configuration side of clustering. Once you have the go-ahead from management and you have your plan, you need to consider every design in a unique way. As you get involved in the next chapter, you’ll look at every design in detail as you learn how to configure it. It’s imperative that you read all the Notes and Tips, so you can learn from other’s mistakes.
Another form of load balancing exists, though, which is if you have one IP address for an entire load-balanced cluster (with Windows 2000 Advanced Server, this scales to 32 nodes) and, using an algorithm, each node in the cluster helps with the entire data-traffic load. You can also use third-party solutions for load balancing in this manner, which you learn about shortly. The way network load balancing (NLB) works is by having a driver sit between the TCP/IP stack and your NIC card. This driver is installed when you apply the service on every node in the cluster.
A real ROI analysis needs financial information, which you might not be privy to but, for the sake of this book, let’s pretend you do get the company’s profit count for the year. If you can do some math and determine that the company, with the use of the IT infrastructure, makes, say, 1 million dollars per month, then you can easily explain what a one-week outage would cost the company. One week of downtime for a company that earns 1 million dollars a month is going to cost that company $250,000.