Simple definition
A VMware memory snapshot captures guest RAM state in addition to disk state when memory capture is enabled.
Purpose and use
A memory snapshot can retain a VM’s execution state as well as supported disk state.
How does it work?
The platform records information needed to resume that state, with storage overhead and possible interruption during capture.
Example and verification
Verify whether memory was included and whether the application supports returning to that state.
Points to watch
Reverting one VM does not revert external systems to the same instant. Sessions and distributed transactions can become inconsistent.
In short
A memory state is a local recovery point, not guaranteed consistency across the wider information system.