VMware snapshot

A VMware snapshot is a copy of the virtual machine's disk file (VMDK) at a given point in time. Snapshots provide a change log for the virtual disk and are used to restore a VM to a particular point in time when a failure or system error occurs. Snapshots alone do not provide backup.
In this tutorial we discus given below topic:
1.Take a snapshots.
2.Revert to the latest snapshot or any other snapshot.
3.Delete a snapshot.
4.Delete all snapshots.
5.Edit a snapshot (Name and Description).

Taking a Snapshot:
1. Use the Snapshot menu on the Workstation toolbar to take a snapshot.

In above figure :
TS     : (Take a Snapshot) Take a snapshot of this virtual machine

RCS  : Revert to current snapshot
SM    : Snapshot manager 
Another way to take Snapshot:
Choose VM > Snapshot > Take Snapshot

2.Type a name for your snapshot.
Every snapshot must have a unique name. If you type the name of an existing snapshot, a warning appears and you must enter a different name.

If you wish, you may type a description for your snapshot.
Descriptions are useful to identify differences between similarly-named snapshots. Descriptions appear in the snapshot manager.

3.Now Click OK

 Revert to the latest snapshot or any other snapshot.

To revert back to a snapshot, you either select the Revert to Current Snapshot option.

If a VM has multiple snapshots, just highlight the snapshot you want to revert to from the snapshot hierarchy displayed in Snapshot Manager and hit the Go to..

 

The state a VM reverts to, depends on the selected options at the time the snapshot was taken. If the memory option was selected, the VM remains powered on while it reverts back to a previous state. If the memory option was not included at the time the snapshot was taken, you will need to power up the VM manually after reverting back from snapshot regardless of the power state the VM was in when the snapshot was taken.

Whenever you revert back from snapshot, you will be warned that the current state of the VM will be lost unless you take a snapshot as shown in below: Click Yes to continue.

Delete a snapshot

You can delete a single snapshot or any existing snapshots all at one go. Now open Snapshot Manager

Deleting snapshots is an I/O expensive process and may affect performance. When a snapshot is deleted, the current state of a VM remains unchanged. Select Snapshot (RDTECH) you want to delete & hit Delete button

Now Confirm Delete

Delete all snapshots
For Deleting all snapshot..Click on Delete all button

Now Confirm Delete

Edit a snapshot (Name and Description)
Just highlight the snapshot you want to edit & Click on Edit button.

After Change Click OK