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A virtual machine fails to migrate during a Storage DRS event.
What could cause this issue?
A. Storage DRS is enabled for the datastore cluster but disabled for the virtual disks.
B. Storage DRS is enabled, but vMotion is disabled for the affected virtual machine.
C. The vMotion network used for Storage DRS is down for a host in the cluster.
D. Storage DRS is attempting to migrate the virtual machine between VMFS and NFS datastores.
Correct Answer: A
Explanation/Reference:
Explanation:
Even when Storage DRS is enabled for a datastore cluster, it might be disabled on some virtual disks in the datastore cluster.
There a several reasons why Storage DRS may be enabled on a virtual disk. Here are some of the possible reasons:
A virtual machine’s swap file is host-local (the swap file is stored in a specified datastore that is on the host). The swap file cannot be relocated and Storage DRS is disabled for the swap file disk.
The home disk of a virtual machine is protected by vSphere HA and relocating it will cause loss of vSphere HA protection.
The virtual machine is a template.
The virtual machine is vSphere Fault Tolerance-enabled.
The virtual machine is sharing files between its disks.
The problem will need to be addressed before Storage DRS can migrate the VM.
Incorrect Answers:
B: There is no way to specifically disable vMotion on a single VM. You can create affinity rules to prevent a VM being vMotion’d from a host but that would not prevent the VM being moved to a different datastore by Storage DRS. Therefore, this answer is incorrect.
C: The question states that a virtual machine fails to migrate during a “Storage DRS event”. If the vMotion network used for Storage DRS is down, there would be no Storage DRS event. Therefore, this answer is incorrect.
D: Storage DRS would not attempt to migrate the virtual machine between VMFS and NFS datastores. Mixed datastores cannot be included in the same DRS datastore cluster. Therefore, this answer is incorrect.
References:
https://pubs.vmware.com/vsphere-55/index.jsp?topic=%2Fcom.vmware.vsphere.troubleshooting.doc%2FGUID-B749AAA0-7B67-4A79-BEDC-395DFEC9FC60.html
