When you see storage policy is "None", similar to:
This means, no VM storage policy is applied to the corresponding disk. vSAN Health check will prompt a warning, reminding users to reapply the VM storage policy.
To fix this issue, please click "Reapply VM Storage Policy"
1.Browse to VM in the vCenter Web Client navigator.
2.Click the Configuration tab.
3.Click Policies at the left of the panel
4.If the button 'Reapply VM Storage Policy' is clickable, click it to reapply VM storage policy
5.If it is unclickable
a. Click "Edit VM Storage Policies"
b. Select other available policy
c. Click "OK"