2V0-622 · Question #6
Which feature helps in managing the power consumed by a cluster when virtual machine usage is low?
The correct answer is C. Distributed Power Management. VMware Distributed Power Management (DPM) reduces cluster energy consumption by consolidating VMs onto fewer hosts and powering off idle hosts during low utilization periods.
Question
Which feature helps in managing the power consumed by a cluster when virtual machine usage is low?
Options
- AvMotion
- BDynamic Resource Scheduler
- CDistributed Power Management
- DStorage vMotion
How the community answered
(27 responses)- A4% (1)
- B4% (1)
- C93% (25)
Why each option
VMware Distributed Power Management (DPM) reduces cluster energy consumption by consolidating VMs onto fewer hosts and powering off idle hosts during low utilization periods.
vMotion live-migrates running VMs between powered-on hosts for load balancing or maintenance but does not control host power states or manage energy consumption.
Dynamic Resource Scheduler (DRS) balances CPU and memory workloads across cluster hosts in real time but does not power hosts on or off to conserve energy.
vSphere DPM monitors cluster resource utilization and, when demand is low, uses vMotion to migrate VMs to a reduced set of hosts, then powers off the now-empty hosts via IPMI, HP iLO, or Wake-on-LAN. When demand increases, DPM automatically powers those hosts back on and allows DRS to redistribute workloads, making it the purpose-built feature for cluster power management.
Storage vMotion migrates VM virtual disks between datastores while VMs remain running and has no role in host power management or cluster energy savings.
Concept tested: vSphere Distributed Power Management for cluster energy savings
Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.resmgmt.doc/GUID-5E5E349A-4644-4C9C-B434-1C0243EBDC80.html
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