There is a growing conflict surrounding virtualization that has nothing to do with its relationship with cloud computing. While IT strives for higher virtual machine density to improve TCO and ROI that increase can cause depletion of compute resources at a much faster rate. This effectively decreases efficiency of the data center and tanks the TCO and ROI that made virtualization attractive in the first place.
Perhaps worse for users and those responsible for resolving application performance issues is that the depletion of resources has a direct impact on application performance and, ultimately, availability. I/O intensive operations end up bogged down in the virtualization translation layer while saturation of the network card and software switches turn the network into a bottleneck, reducing available bandwidth, increasing latency, and degrading application performance.
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Posted by Karl Triebes on 05/26/20102 comments