VCP550 · Question #71
What two requirements must be met to create a fully automated Distributed Resource Scheduler (DRS) cluster? (Choose two.)
The correct answer is A. Shared storage D. vMotion. A fully automated DRS cluster requires shared storage so any host can access VM disk files, and vMotion so running VMs can be live-migrated between hosts for load balancing.
Question
What two requirements must be met to create a fully automated Distributed Resource Scheduler (DRS) cluster? (Choose two.)
Options
- AShared storage
- BHosts with identical processor features
- CStorage vMotion
- DvMotion
How the community answered
(22 responses)- A86% (19)
- B5% (1)
- C9% (2)
Why each option
A fully automated DRS cluster requires shared storage so any host can access VM disk files, and vMotion so running VMs can be live-migrated between hosts for load balancing.
Shared storage is mandatory because DRS must be able to run any VM on any host in the cluster; without a shared datastore, a destination host cannot access the VM's disk files and vMotion cannot complete the migration.
Identical processor features are not a hard requirement for DRS; Enhanced vMotion Compatibility (EVC) can bridge mixed CPU generations, and DRS itself does not mandate homogeneous processors.
Storage vMotion enables live migration of VM disk files between datastores and is a prerequisite for Storage DRS, not Compute DRS; a standard fully automated DRS cluster does not require it.
vMotion is the core technology DRS uses to migrate running VMs between hosts to balance CPU and memory utilization; without vMotion, DRS has no mechanism to rebalance workloads and cannot function in fully automated mode.
Concept tested: DRS fully automated cluster prerequisites - shared storage and vMotion
Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.resmgmt.doc/GUID-4D1A5208-B4E6-4A34-BDE8-D86E08D0DE06.html
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