Can you oversell Hard Disk with OnApp?
All OnApp versions
OnApp itself does not have thin provisioning functionality for LVM data stores, but if your SAN supports it you should be able to oversell at that level. Please contact your SAN provider for more information.
Within OnApp you would need to set the Data Store size to the extended size, rather then the actual disk space available if using thin provisioning on your SAN.
With Integrated Storage, it is possible to overcommit the storage. Please see the admin guide for additional information.
Unlimited overcommit is not recommended for production clouds. This would require constant supervision/disk rebalancing to ensure that nodes do not overflow.