2V0-21.23 Question 47
Select 3A VMware administrator is managing a vSphere cluster with VMware Distributed Resource Scheduler (DRS) enabled. The cluster is under high resource demand, and DRS is attempting to balance workloads. How does DRS calculate and assign scores to virtual machines to determine the best placement or migration decisions?
- A
DRS calculates a VM's score based on its CPU and memory demands relative to the host's available resources.
- B
DRS assigns scores to VMs based on their uptime duration and storage latency thresholds.
- C
DRS considers VM-VM affinity and anti-affinity rules when calculating VM scores.
- D
DRS factors in resource entitlement settings, such as shares, reservations, and limits, for VM scoring.
- E
DRS only calculates VM scores at the time of initial placement and does not adjust them during runtime.
Show answer and explanation
Correct answers: A, C, D
Explanation
VMware DRS scores virtual machines by evaluating their resource demands (CPU and memory), compliance with VM affinity/anti-affinity rules, and entitlement settings (shares, reservations, and limits). These factors help DRS make optimal placement or migration decisions to balance the cluster's workload effectively. DRS operates dynamically and makes adjustments during runtime to ensure resource efficiency and compliance with policies.
- A. Correct.
Correct: DRS evaluates a VM's CPU and memory demands relative to host resources to determine the best placement or migration decision.
- B. Incorrect.
Incorrect: DRS does not consider VM uptime or storage latency directly when scoring VMs. These are not primary factors in DRS scoring.
- C. Correct.
Correct: DRS takes VM-VM affinity and anti-affinity rules into account to ensure compliance with user-defined rules while balancing workloads.
- D. Correct.
Correct: Resource entitlement settings such as shares, reservations, and limits are important for DRS scoring to ensure fair allocation of resources based on priority.
- E. Incorrect.
Incorrect: DRS continuously monitors resource usage and adjusts VM placement over time, not just during initial placement.