Access "Myth of VM mobility and follow-the-sun data centers"
This article is part of the December 2011 Vol. 2, No. 6 issue of Revisiting past predictions for networking technology
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 this goal by moving virtual ... Access >>>
Premium Content for Free.
Enterprise wireless connection policy: Navigating cellular vs. WiFi
by Lisa Phifer, Contributor
Trying to decide cellular vs. Wi-Fi for mobile devices? An enterprise wireless connection policy will help steer mobile devices to the right network.
- Enterprise wireless connection policy: Navigating cellular vs. WiFi by Lisa Phifer, Contributor
Hotspot 2.0 primer: Another step toward Wi-Fi/cellular integration
by Rivka Gewirtz Little
Hotspot 2.0 and the IEEE 802.11u protocol could allow mobile device users to securely roam between Wi-Fi and cellular networks without stopping to authenticate.
FCoE network convergence will start at the edge but move to the rack
by Stuart Miniman, Contributor
Implementing FCoE network convergence is possible considering the move to 10 GbE and the emergence of data center bridging.
End-to-end FCoE for network convergence won't work!
by Stephen Foskett
FCoE at the edge can be a step toward network convergence, but end-to-end FCoE needs a whole lot more engineering before it can be reliable.
Myth of VM mobility and follow-the-sun data centers
by Ivan Pepelnjak
Think VM mobility and follow-the-sun data centers work for high availability and disaster avoidance? Think again. Long-distance migration is still a problem.
- Hotspot 2.0 primer: Another step toward Wi-Fi/cellular integration by Rivka Gewirtz Little
More Premium Content Accessible For Free
The average person carries three mobile devices, according to an informal poll conducted last year by Sophos Labs. While Kindles and Fitbits probably...
More -- and more complex -- mobile devices are jumping on your enterprise network, gobbling up bandwidth from the WLAN infrastructure. This technical...
Whenever users complain about an application being slow, the network is always first to be blamed. And yet network engineers often have limited ...