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 .. 15 CPU Utilization Summary .. 16 Memory Utilization Summary .. 16 Case Studies .. 16 Case Study 1 DRS Provides Effective VM Initial Placement .. 16 Expectation .. 17 Observation.
machine in the cluster gets the host resources—like memory and CPU—that it needs. Let’s take a closer look at how DRS achieves its goal of ensuring VMs are happy, with effective placement and ... • Fully Automated – DRS applies both initial placement and load balancing recommendations automatically.
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