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Understanding virtual machine snapshots in vSphere (VMware KB Article 1015180)
Best practices for virtual machine snapshots in the VMware environment (VMware KB Article 1025279)
How to consolidate disk snapshots (VMware KB article 2003638)
vSphere client: right click on the VM name, go to "Snapshots", choose "Consolidate".
vSphere Web client: click "Actions" tab, go to "All vCenter Actions", go to "Snapshots", choose "Consolidate".
Snapshot Old Notification
The ITS Private Cloud will notify periodically when a snapshot is not compliant with the 72 hour lifetime period.
The Notifications will be ongoing until the deletion and will include the VM admin, informational contacts and the user who created the snapshot.