Читать книгу CompTIA Cloud+ Study Guide - Ben Piper, David Higby Clinton - Страница 100

Major cloud providers partition their operations into regions for fault tolerance and to offer localized performance advantages. A region is not a monolithic data center but rather a geographical area of presence that usually falls within a defined political boundary, such as a state or country. For example, a cloud company may offer regions throughout the world, as shown in Figure 1.20. They may have regions in Sydney and Tokyo in the Asia Pacific region, and in Europe there may be regions called London and Oslo. In North America there could be regions in Boston, Ottawa, Austin, and San Jose.

FIGURE 1.20 Cloud regions

All of the regions are interconnected to each other and the Internet with high-speed optical networks but are isolated from each other, so if there is an outage in one region, it should not affect the operations of other regions.

Generally, data and resources in one region aren't replicated to any other regions unless you specifically configure such replication to occur. One of the reasons for this is to address regulatory and compliance issues that require data to remain in its country of origin.

When you deploy your cloud operations, you'll be given a choice of what region you want to use. Also, for a global presence and to reduce network delays, the cloud customer can choose to replicate operations in multiple regions around the world.