Points of My Scenario:
1. I am vSphere and Windows update admin for 100+ Windows virtual machines.
2. I need VMware snapshots as a roll-back plan for VMs that fail from software updates.
3. I must ensure adequate free space on data stores to handle snapshots.
4. Snapshots will include virtual memory.
Is the storage used equal to VM size at point of snapshot PLUS changes due to software updates?