Upon checking VCF Health for VCF instances in VCF Operations 9.x, it shows "Not Configured" for vSAN cluster -
VCF Operations 9.x
This happens if vSAN clusters are in maintenance window in VCF Operations. Since the cluster is in maintenance, the collection stops for the cluster.
Under Inventory on VCF Operations, switch to Storage view and navigate to the affected vSAN cluster as below:
End maintenance on the affected vSAN clusters from Aria Operations
Configurations" in the left paneInventory Management" tileEnd maintenance" on the cluster and wait for the collection status to turn greenReference screenshot: