Four years ago, data center server utilization was just 18 percent. To put it another way, on average 82 percent of the server capacity in major data centers was underutilized. Given all of the emphasis on server virtualization in the last few years, you’d expect utilization to have increased sharply. But it hasn’t. According to Gartner research, overall utilization is still at 18 percent — and utilization of x86 servers is one-third lower at 12 […]
virtual machines
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This article is based on the book “Creating the Infrastructure for Cloud Computing: An Essential Handbook for IT Professionals” The virtualization models for clients are, arguably, more diverse than those for servers. For servers there are essentially two, the earlier model of static consolidation and the more recent dynamic model where virtual machines lightly bound to physical hosts can be moved around with relative ease. With virtualized clients there are also two main models, depending […]
The industry reached a “virtual” tipping point in 2009 when, according to IDC, the number of newly installed virtual machines surpassed the number of newly installed physical servers. This inflection point is having a profound impact on how we manage, secure and provision IT resources. No doubt the network will look completely different in just a few years too, but here are five predictions for how virtualisation will change networking in 2011. 1. VLAN technology […]