A vSphere administrator needs to enable Distributed Resource Scheduling (DRS) in an existing vSphere environment:
The environment contains a High Availability (HA) cluster with eight ESXi hosts.
Six ESXi hosts are not in a cluster.
DRS should be used on as many hosts as possible.
Initial placement of virtual machines should be automatically performed.
Migration recommendations should be provided, but not performed without approval.
Which procedure should the administrator perform to accomplish this task?
A. Select the datacenter and create a DRS cluster. Add the six remaining hosts to this cluster, then enable DRS. Edit the DRS settings and change the automation level to Partial.
B. Select the existing HA cluster. Add the six remaining hosts to the cluster. Enable DRS, then edit the settings and change the automation level to Manual.
C. Select the datacenter and create a DRS cluster. Add the six remaining hosts to this cluster, then enable DRS. Edit the DRS settings and change the automation level to Manual.
D. Select the existing HA cluster. Add the six remaining hosts to the cluster. Enable DRS, then edit the settings and change the automation level to Partial.
Correct Answer: D
Explanation/Reference:
Explanation:
The question states that DRS should be used on as many hosts as possible. By adding the six standalone hosts to the 8-node cluster then enabling DRS on the cluster, we will ensure that DRS is used on all 14 hosts.
To meet the VM initial placement and migration requirements, we need to set the DRS automation level to Partial. Clusters configured for partial automation will automatically place new virtual machines on existing hosts based on performance and resource criteria. However, after the initial placement event, which may result in recommendations to move other workloads to accommodate the new virtual machine, DRS operates the same way that it does when Manual DRS is use.
Incorrect Answers:
A: This solution suggests adding the six remaining hosts to a DRS cluster. However, it does not mention adding the 8-node HA cluster to the DRS cluster. Therefore, DRS will only be running on the six hosts. This solution does not meet the requirement that DRS should be used on as many hosts as possible. Therefore, this answer is incorrect.
B: The automation level needs to be set to partial, not manual. In manual mode, the DRS cluster will make recommendations to an administrator, but no automated actions will be taken. The administrator must manually carry out any recommendations. This solution does not meet the requirement that initial placement of virtual machines should be automatically performed. Therefore, this answer is incorrect.
C: This solution will create a six host DRS cluster in manual mode. This solution does not meet the requirements that DRS should be used on as many hosts as possible or that initial placement of virtual machines should be automatically performed. Therefore, this answer is incorrect.
References:
http://www.virtualizationadmin.com/blogs/lowe/news/vsphere-drs-automation-levels-explained.html