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SAN Volume Controller: Best Practices and Performance Guidelines by

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Chapter 9.3.2. Making multiple related FlashCopy VDisks with data integrity

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Chapter 9. Copy services 151 6. After the FlashCopy mapping is prepared, you can then quiesce the host by forcing the host and the application to stop I/ Os and flush any outstanding write I/ Os to disk. This process will be different for each application and for each operating system. One guaranteed way to quiesce the host is to stop the application and unmount the VDisk from the host. 7. As soon as the host completes its flushing, you can the start the FlashCopy mapping. The FlashCopy starts very quickly ( at most, a few seconds). 8. When the FlashCopy mapping has started, you can the unquiesce your application ( or mount the volume and start the application), ...

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