Yes here are the steps
1. Create a new alert definition and select Datastore cluster as your object
2. Change Defined On to child and then select datastore (see screenshot highlighted in red)
3. Create a new symptom for datastore less than 200GB free space
4. Attach it alert and change it to Any(see screenshot highlighted in red)
5. Make sure to go to step 4 and activate it on all active policies.
6. Save the alert
Yes here are the steps
1. Create a new alert definition and select Datastore cluster as your object
2. Change Defined On to child and then select datastore (see screenshot highlighted in red)
3. Create a new symptom for datastore less than 200GB free space
4. Attach it alert and change it to Any(see screenshot highlighted in red)
5. Make sure to go to step 4 and activate it on all active policies.
6. Save the alert
This alert is exactly what I was looking for, thank you!
That said, in addition to the alert, I figured out how to create the supermetric that'll let me build a View>Dashboard with a filter on the view.
Supermetric: Highest Datastore Freespace in Datastore Cluster
max(${adaptertype=VMWARE, objecttype=Datastore, metric=OnlineCapacityAnalytics|diskspace|total|capacityRemaining, depth=2})
Assign it to Object Type 'Datastore Cluster'
Now, just create a List View showing Datastore Clusters, include the new Supermetric, then add a Filter to the view where the highest value is less than 200 GB.
Works great and now along with the alert, can also dashboard it.
Nice! You have advance vROPS Skills