What two requirements must be met to create a fully automated Distributed Resource Scheduler (DRS) cluster? (Choose two.)
A. Shared storage
B. Hosts with identical processor features
C. Storage vMotion
D. vMotion
Correct Answer: AD
Explanation/Reference:
Explanation:
VMware DRS (Distributed Resource Scheduler) is a load balancing utility that assigns and moves computing workloads to available hardware resources in a virtualized environment.
DRS uses vMotion to move the VMs between the hosts. To be able to configure the DRS automation level, Enhanced vMotion Compatibility (EVC) must be enabled in the vSphere cluster. This is to prevent compatibility issues between hosts with different CPU capabilities (clock speed, number of cores etc.).
After EVC is enabled for a cluster in the vCenter Server inventory, all hosts in that cluster are configured to present identical CPU features and ensure CPU compatibility for vMotion.
A DRS cluster requires shared storage. Shared storage is typically on a SAN, but can also be implemented using NAS shared storage.
To enable the use of DRS migration recommendations, the hosts in your cluster must be part of a vMotion network.
Incorrect Answers:
B: The hosts do not need identical processor features. Enhanced vMotion Compatibility is a DRS (in automatic mode) requirement which prevents compatibility issues between hosts with different CPU capabilities. EVC ensures that all hosts in a cluster present the same CPU feature set to virtual machines, even if the actual CPUs on the hosts differ. Therefore, this answer is incorrect.
C: Storage vMotion is not a requirement of DRS. DRS migrates VMs between hosts according to available resources. It does not move VMs between datastores. Therefore, this answer is incorrect.
References:
https://pubs.vmware.com/vsphere-55/index.jsp#com.vmware.vsphere.resmgmt.doc/GUID-0F1A46B1-86D1-4B5E-9D96-EB59D5A9B2F2.html
https://pubs.vmware.com/vsphere-55/index.jsp#com.vmware.vsphere.resmgmt.doc/GUID-56E9F25B-7CD7-4AB4-B4DD-5E8A0D8D06AC.html
Explanation/Reference:
Explanation:
VMware DRS (Distributed Resource Scheduler) is a load balancing utility that assigns and moves computing workloads to available hardware resources in a virtualized environment.
DRS uses vMotion to move the VMs between the hosts. To be able to configure the DRS automation level, Enhanced vMotion Compatibility (EVC) must be enabled in the vSphere cluster. This is to prevent compatibility issues between hosts with different CPU capabilities (clock speed, number of cores etc.).
After EVC is enabled for a cluster in the vCenter Server inventory, all hosts in that cluster are configured to present identical CPU features and ensure CPU compatibility for vMotion.
A DRS cluster requires shared storage. Shared storage is typically on a SAN, but can also be implemented using NAS shared storage.
To enable the use of DRS migration recommendations, the hosts in your cluster must be part of a vMotion network.
Incorrect Answers:
B: The hosts do not need identical processor features. Enhanced vMotion Compatibility is a DRS (in automatic mode) requirement which prevents compatibility issues between hosts with different CPU capabilities. EVC ensures that all hosts in a cluster present the same CPU feature set to virtual machines, even if the actual CPUs on the hosts differ. Therefore, this answer is incorrect.
C: Storage vMotion is not a requirement of DRS. DRS migrates VMs between hosts according to available resources. It does not move VMs between datastores. Therefore, this answer is incorrect.
References:
https://pubs.vmware.com/vsphere-55/index.jsp#com.vmware.vsphere.resmgmt.doc/GUID-0F1A46B1-86D1-4B5E-9D96-EB59D5A9B2F2.html
https://pubs.vmware.com/vsphere-55/index.jsp#com.vmware.vsphere.resmgmt.doc/GUID-56E9F25B-7CD7-4AB4-B4DD-5E8A0D8D06AC.html
