SAN Volume Controller: Best Practices and Performance Guidelines

Chapter 9.1.4. Using native controller Advanced Copy Services functions

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Chapter 9. Copy services 145 using a combination of SVC copy services with some image mode cache- disabled VDisks and storage controller copy services. See Figure 9- 1. Figure 9- 1 Using three- way copy services In Figure 9- 1, the Primary Site uses SVC copy services ( Global or Metro Mirror) to the secondary site. Thus, in the event of a disaster at the primary site, the storage administrator enables access to the target VDisk ( from the secondary site), and the business application continues processing. While the business continues processing at the secondary site, the storage controller copy services replicate to the tertiary site. In Figure 9- 1, the SVC copy ...