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Storage Networking Fundamentals: An Introduction to Storage Devices, Subsystems, Applications, Management, and Filing Systems by Marc Farley

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Examples of Remote Copy Architectures

The rest of the chapter looks at a couple of different remote copy designs.

“Ping Pong” Remote Copy Between Two Sites

In this example a company has two data centers in the same region or city. Each of them has primary storage and uses the other for secondary storage in a remote copy system.

Figure 10-7 shows two sites named East and West. Both sites have storage and remote copy controllers providing forwarding and receiving roles. If one site experiences a problem, the work resumes at the other site. Companies with multiple data centers sometimes use this type of arrangement because they have full-time staff available in both locations.

Figure 10-7. Two Sites Providing Secondary Storage for the Other

While ...

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