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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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Remote Copy Implementation Options

With an understanding of how remote copy processes work, it's possible to explore different points along the I/O path at which remote copy applications can be implemented, including host software, networking equipment, and disk subsystem controllers.

We'll now explore these options and attempt to highlight their relative advantages and disadvantages. One of the issues with all remote copy implementations is they are proprietary products that do not interoperate. When you choose a remote copy solution, you need to have matching forwarding and receiving controllers from the same vendor. However, it is possible to have multiple remote copy applications running in the same environment, even using the same intermediary ...

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