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62 Containers For Dummies, HPE and Docker Special Edition These materials are © 2017 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. resources like storage and memory due to no longer needing the OS overhead of multiple virtual machines. Of course, Synergy can support you nicely here. You can deploy as many bare-metal systems as you like in your Synergy environment. Tune to optimize Depending on the application, some tuning may be required to achieve optimal performance with virtual machines or containers. For example, HPE's tests show that for CPU-bound workloads, performance can vary widely based on VM and container CPU affinity settings. If you're using VMs (with or without contain- ers) and have workloads that are largely CPU bound, you should perform some benchmarking with and without CPU affinity set in your environment to gain a clearer understanding of its poten- tial benefits. Managing CPU affinity settings in virtualization can add complexity to infrastructure management, but rarely does it negatively affect performance — often, it improves it. If this sounds complicated to you, never fear! HPE has your back and can help you with this analysis and help you to deploy a per- fectly tuned Docker infrastructure. Go bare-metal when you're ready or use big virtual machines Either way, HPE Synergy has you covered because it supports both bare metal and virtual deployment models, and contain- ers can run on either. In testing, HPE's analysis shows that the bare-metal Docker deployments yielded performance and capac- ity improvements beyond all other scenarios. If it fits your infra- structure management model to choose bare-metal hosts for your containers, you'll get higher density of workloads with improved overall performance than you would with virtual machines. For example, HPE was able to consolidate a single host with eight MySQL virtual machine workloads to eight containers running on an identical bare-metal host and achieve a 73 percent perfor- mance improvement.