How to Schedule a VMWare Snapshot.
Before I show you how to use SnapShot Master to create and schedule a VMWare Snapshot I will briefly describe what a snapshot is.
What is a VMWare Snapshot?
VMWare Snapshots are a quick and easy way to provide a previous point in time in which you can revert your virtual machine to. Snapshots are a great feature to use prior to performing any risky upgrades, applying Windows updates or hardware reconfiguration as they give you the benefit of a fast roll back point should any issues occur.
When creating a VMWare Snapshot a differencing disk is created with *–delta.vmdk extension and an .vmsn file for configuration changes. the VMWare Snapshot preserves the state of the virtual machine at a specific point in time. (These new files leave the original VMDK files intact, hence allowing you to have a role back position.)
The more Snapshots you create, the more disk space you will utilise. It is also worth noting that the VM will also have its performance effected by each snapshot created.
The VMWare Snapshot Tree shows each and every snapshot created for the virtual machine selected. Each subsequent snapshot stems from the previous one with the delta changes stored on the snapshot’s disk which is the difference between the current state and the last snapshot created.
Scheduling a VMWare Snapshot
Now that you understand VMWare Snapshots a little better, we can now start scheduling their creation.
Open your SnapShot Master console and let it sync with your VMWare environment and populate the console with your virtual machines.
Once all your virtual machines have shown up, choose the VMs you want to create a snapshot for by checking the checkbox. You can choose to either do a single machine or multiple machines. In this example Ill create a snapshot for multiple VMs. Right Click any VM and from the menu go to Selected VMs then Take Snapshot.
Give the Snapshot a Name and Description then click OK.
Next we can choose to Execute Now or Schedule Job. I have chosen to schedule the Vmware snapshot creation.
You can now give the Scheduled VMWare snapshot job a name then click OK.
The task scheduler window now starts up. Click on NEW to create a new scheduled task.
Choose a date and time that you want to schedule the VMWare Snapshot for then click OK and then Click OK again on the task scheduling window. The VMWare Snapshots will now be created at the time you have scheduled.
To view Job Status of your scheduled tasks within SnapShot Master, go to the JOBS tab and then Scheduled Jobs. You can see Active / Recent Jobs, Scheduled Jobs as well as Job History.
Now when the time you have scheduled the creation of the VMWare Snapshot comes, SnapShot Master will automate this. If you have email notifications setup within SnapShot Master, you will receive emails detailing when the job started and finalised.
To learn more about the features of SnapShot Master, click this link.