When using Horizon View Instant Clones several objects are created in your vCenter Inventory that are used to assemble the instant clone virtual machines. If you want to find the relationships between those objects then you can read about that in another article on this website here. 

When using Instant Clone virtual desktops in your environment you will find several objects in your inventory that are used to run these machines. The next image shows the folders with the cp-template, cp-replica and cp-parent objects.

In vSAN virtual machines in your inventory have an association with the objects on the vSAN datastore. If you would remove a virtual machine from the inventory but not from disk then the objects on disk will still consume disk space but you will not able to see the direct link with the virtual machine that was previously in your inventory. Such objects on your vSAN datastore are known as unassociated objects.

The performance statistics in vSAN are stored in a database object on the vSAN Datastore in a vSAN enabled cluster. Information about the object can be found in the vSphere Client under the Services tab of the vSAN Cluster Configuration. The image below shows the objects's status and that it's protected under the vSAN Default Storage Policy. 

The vSphere Client and vSphere Web Client in the vCenter Appliance both have a timeout of 120 minutes. NSX-T has a timeout of 30 minutes. When I am teaching VMware classes the client always has just timed out when I want to demonstrate something to my students and I then have to re-login. So therefor I always configure the timeout to 0 (no timeout) at the start of each class. It is documented here how to do that: