Transcription of Understanding VMware vSphere DRS Performance
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Understanding VMware vSphere DRS Performance
Understanding vSphere DRS Performance VMware vSphere 6 Performance STUDY OCTOBER 2016 Understanding vSphere DRS Performance Performance STUDY | 2 Table of Contents Introduction .. 4 How DRS Works .. 4 Effective VM Placement .. 4 Efficient Load Balancing .. 5 Calculating VM Resource Demand .. 5 Detecting VM Demand Changes .. 5 Cost Benefit Analysis .. 5 Factors That Affect DRS Behavior .. 6 DRS Automation Levels .. 6 DRS Aggression Levels ( Migration Threshold) .. 6 VM Overrides .. 7 VM/Host 8 Reservation, Limit, and Shares .. 11 Reservation .. 11 Limit .. 11 Shares .. 11 Advanced Options .. 12 Troubleshooting and Monitoring .. 13 Recommendations .. 14 History .. 15 DRS Faults.
VM placement is a key aspect of DRS performance and must be effective because this reduces the amount of load balancing that is required. When DRS chooses the optimal host with the closest match of resources, and it ... CPU ready time is usually a very good indicator of CPU contention in a host.
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