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2V0-622D · Question #240

When working with VM-VM DRS rules (affinity/anti-affinity), which statement is correct?

The correct answer is A. DRS gives higher priority to preventing violations of affinity rules than violations of anti-affinity. When DRS cannot satisfy both VM-VM rule types simultaneously, it prioritizes honoring affinity rules over anti-affinity rules.

Section 5 – Administer and Protect vSphere 6.5 Resources

Question

When working with VM-VM DRS rules (affinity/anti-affinity), which statement is correct?

Options

  • ADRS gives higher priority to preventing violations of affinity rules than violations of anti-affinity
  • BDRS gives the same priority to preventing violations of anti-affinity rules as affinity rules.
  • CDRS does not allow both affinity and anti-affinity rules to be enabled at the same time within a
  • DDRS gives higher priority to preventing violations of anti-affinity rules than violations of affinity

How the community answered

(18 responses)
  • A
    89% (16)
  • B
    6% (1)
  • C
    6% (1)

Why each option

When DRS cannot satisfy both VM-VM rule types simultaneously, it prioritizes honoring affinity rules over anti-affinity rules.

ADRS gives higher priority to preventing violations of affinity rules than violations of anti-affinityCorrect

vSphere DRS applies a rule priority order when conflicts arise between VM-VM affinity and anti-affinity rules; affinity rules (requiring VMs to share a host) take precedence and will be honored first. This means DRS may accept an anti-affinity rule violation in order to maintain required affinity placements, ensuring co-location constraints for latency-sensitive workloads are preserved.

BDRS gives the same priority to preventing violations of anti-affinity rules as affinity rules.

DRS does not treat affinity and anti-affinity rules with equal weight; there is a defined priority ordering where affinity rules take precedence over anti-affinity rules.

CDRS does not allow both affinity and anti-affinity rules to be enabled at the same time within a

vSphere DRS fully supports having both affinity and anti-affinity VM-VM rules active simultaneously within the same cluster without any mutual exclusivity.

DDRS gives higher priority to preventing violations of anti-affinity rules than violations of affinity

DRS does not give anti-affinity rules higher priority than affinity rules; the behavior described is the reverse of the actual rule priority ordering.

Concept tested: DRS VM-VM affinity vs anti-affinity rule priority ordering

Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.resmgmt.doc/GUID-FF28F29C-8B67-4EFF-A2EF-63B3537E6934.html

Topics

#DRS rules#affinity rules#anti-affinity rules#rule priority

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