Which two statements are true for Predictive DRS? (Choose two.)
A.
It balances resource utilization for virtual machines with unpredictable utilization patterns.
B.
It integrates DRS with vRealize Operations Manager to balance workloads for virtual machines before
resource utilization spikes occur.
C.
It balances resource utilization based on a threshold’s algorithm that runs each night.
D.
It determines the best placement and balance of virtual machines based on a threshold’s algorithm that runs
each night in vCenter Server 6.5 Database.
Explanation:
Predictive DRS using a combination of DRS and vRealize Operations Manager to predict future demand and
determine when and where hot spots will occur. When future hot spots are found, Predictive DRS moves the
workloads long before any contention can occur.
Each night it runs its Dynamic Threshold calculations which uses sophisticated analytics to create a band of
what is “normal” for each metric/object combination
https://blogs.vmware.com/management/2016/11/predictive-drs.html
Correct, BC
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https://blogs.vmware.com/vsphere/2017/01/learning-predictive-drs.html
vRealize Operations Manager runs its dynamic thresholds algorithm nightly against the VMs on which it collects data. These dynamic thresholds create forecasted metrics for the future utilization of the VMs. The metrics are then passed to vSphere DRS to determine the best placement and balance of VMs before resource utilization spikes occur. Predictive DRS helps prevent resource contention on hosts that run VMs with predictable utilization patterns
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So B&D, correct?
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Nevermind, it is B&C because it is not run in vcenter database, but rather in vrops, so D is wrong.
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