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An administrator enables DRS and sets the automation level to Fully Automated. DRS is only making initial placement recommendations. What is causing this?
D is my answer. Because To enable the use of DRS migration recommendations, the hosts in your cluster must be part of a vMotion network. If the hosts are not in the vMotion network, DRS can still make initial placement recommendations.
https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.resmgmt.doc/GUID-56E9F25B-7CD7-4AB4-B4DD-5E8A0D8D06AC.html
I Agree with you,
If DRS is agressive so DRS want to vmotion quite often and so if vMotion is misconfigured it's the root cause that DRS is only doing the initial placement.
Answer is D.
D is correct Answer. Thumbs up for the last two posts. Aggresive means VMotion at the slightest of imbalance, therefore something else is preventing the migration and that has to be VMotion
DRS treats a powered-on virtual machine with a virtual flash reservation as having a soft affinity with its current host. DRS will not recommend such a virtual machine for vMotion except for mandatory reasons, such as putting a host in maintenance mode, or to reduce the load on an over utilized host.
https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.resmgmt.doc/GUID-51F03E21-766B-400A-B74A-4EABC586E463.html
After a host has been added to a DRS-enabled cluster, the virtual machines deployed to the host become part of the cluster. DRS can recommend migration of some virtual machines to this host just added to the cluster. If that does not occur, there may be problems with vMotion, host compatibility, or affinity rules. The following are possible reasons:
vMotion is not configured or enabled on this host.
Virtual machines on other hosts are not compatible with this host.
The host does not have sufficient resources for any virtual machine.
Moving any virtual machines to this host would violate a VM/VM DRS rule or VM/Host DRS rule.
This host is reserved for HA failover capacity.
A device is mounted to the virtual machine.
The vMotion threshold is too high.
DRS is disabled for the virtual machines, hence the virtual machine could not be moved onto the destination host.
https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.resmgmt.doc/GUID-23B01178-1EFF-4EDD-8157-6A2C85057D37.html
answer is D
correct Answer is D ,
initial placement i.e. migrate the VM in case maintenance or according to affinity rule , But aggressive mean supply all recommendations and DRS become more active
The answer is D
In fully Automated DRS VMs will be moved from host to host using vMotion automatically. Therefore, DRS provides us with vMotion Load Balancing.
Answer is D.
A does not make sense because with aggressive DRS there will be frequent migrations.
B is not correct, because HA is not a requirement for DRS
C is not correct because flash cache does not affect VM migrations
My gut feeling told me A is correct.
Because if DRS is set to aggressive any other recommendation will be executed immediately.
This could mean there are only initial placement recommendations left.
Could be complete BS, but at least i had the correct answer :-)
At first I was unsure about this answer, but if it is fully automated and set to aggressive, DRS rarely moves the VM's.
https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.resmgmt.doc/GUID-7D3ABD21-4524-42E9-B7FE-6AAF6766433B.html
Incorrect.. you are conflating “high” with “aggressive” but high is 1 and low is 5 as described here, https://blogs.vmware.com/vsphere/2016/10/drs-migration-thresholds.html
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