Chapter 10. Hardware and Software Solutions for High Availability

In this chapter, we will present some examples of high-availability systems solutions offered by both manufacturers of information processing systems and operating systems suppliers.

We can divide these solutions into two main categories:

  • Hardware-based

  • Software-based

We should note that theoretically these two types of solutions are non-exclusive and that it is possible to combine the two approaches within a single system. In practice, however, systems tend to end up in one or the other of the categories, for reasons of development cost. We proceed then to a comparison of these solutions. Here we must note that implementing a software-based solution requires that the hardware platform ...

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