Transcription of Understanding VMware vSphere DRS Performance
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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.
DRS Aggression Levels (a.k.a. Migration Threshold) The DRS aggression level controls the amount of imbalance that will be tolerated in the cluster. DRS has five aggression levels ranging between 1 (most conservative) and 5 (most aggressive). The more aggressive the level, the less DRS tolerates imbalance in the cluster.
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