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December 2011 Vol. 2, No. 6

Myth of VM mobility and follow-the-sun data centers

After I made a particularly snarky comment about an article that touted inter-data center VM mobility as the ultimate tool to reach the 100% availability heavens (this is why that argument is totally invalid), someone asked me why I don’t believe in workload mobility, disaster avoidance and follow-the-sun data centers. I am positive that some businesses have the  need for all three of the above-mentioned functionalities, but I also know that live VM migration isn't the right tool for any of them. Read Ivan's IOS Hints Blog Ivan lays out the basics of Juniper's Qfabric data center network technology: QFabric hardware architecture QFabric control plane overview QFabric forwarding Let’s focus on the most bizarre of the three ideas: using VM mobility to implement follow-the-sun data centers. The underlying business requirements are sound and simple – moving the servers closer to end users reduces latency and long-distance bandwidth requirements. Reduced latency also improves response times and throughput. However, you cannot reach ...

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