A virtual machine that runs on a virtual datastore requires a VM storage policy.
A VM storage policy is a set of rules that contains placement and quality of service requirements for a virtual machine. The policy enforces appropriate placement of the virtual machine within Virtual Volumes storage and guarantees that storage can satisfy virtual machine requirements.
You use the VM Storage Policies interface to create a Virtual Volumes storage policy. When you assign the new policy to the virtual machine, the policy enforces that the Virtual Volumes storage meets the requirements.
If you do not create the VM storage policy compatible with the virtual datastore, the system uses default No Requirements policy. The No Requirements policy is a generic Virtual Volumes policy that contains no rules or storage specifications. The policy allows Virtual Volumes storage arrays to determine the most appropriate placement for the VM objects.