December 2004
Beginner
480 pages
11h 54m
English
book
Storage Networking Fundamentals: An Introduction to Storage Devices, Subsystems, Applications, Management, and Filing Systems
by Marc Farley
Content preview from Storage Networking Fundamentals: An Introduction to Storage Devices, Subsystems, Applications, Management, and Filing Systems
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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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