Scheduled to run at 02:30 on the first Monday of every month.īy the end of June 2020 it would look like this. Scheduled to run at 02:15 on every Monday of every week. Make sure you use a different prefix, suffix or even target folder for each generation to prevent unintended deletion of backups. You will need to create and schedule multiple Example Start.bat files, one for each generation.
![virtualbox snapshot virtualbox snapshot](https://www.linuxtechi.com/wp-content/uploads/2016/01/saved-state-after-snapshot-restore-virtualbox-1024x538.jpg)
ParameterĪdvanced Usage Grandfather-Father-Son Rotation
#Virtualbox snapshot plus
Snapshot VDIs grow with every previously unallocated guest OS write and it’s not long before the total size of a machine’s base VDI plus snapshots exceeds than the machines logical HDD size (this is a very good reason why it’s not a good idea to oversize your hard disks). Add this flag to retaun the snapshots, stacking each snapshot on top of the previous one (uses a lot of disk space). The more VirtualBox snapshots you have the more disk space you consume.
![virtualbox snapshot virtualbox snapshot](https://www.liberiangeek.net/wp-content/uploads/2012/07/virtualbox_snapshot_3_thumb.png)
To save disk space, the snapshot is deleted after the backup is created (unless you're using Snapshot Only). This uses some disk space because VirtualBox saves the new state on top of the latest snapshot. It the best suboptimal solution to prevent downtime.Ī snapshot is always created before the files are copied. Booting a restored backup is as if the VM experienced a power failure. The VM is saved in a live snapshot without any downtime. You might need to restart your VM to fix any time gap issues. Iteratively delete the leaf snapshot until the snapshot you want is a leaf snapshot. Booting a restored backup is like unfreezing time, the same gap applies. To go from N > 1 snapshot to only 1 specific NON-leaf snapshot, you have to do some deletions and some merges: Save a copy of the VM (with its snapshots, all UUID same and all network adapters same) via Clone just in case you mess up the merging. Not all operating systems can handle this gap in time. The VM's state is frozen and saved, VM resumes normally after the snapshot is created. Booting a restored backup is like normal booting the VM. Not ideal if login is required after boot. The VM is completely shut down and boots normally after the snapshot is created. Be aware that you will not be able to restore a backup while the original VM still exists in the same instance of VirtualBox because the drives will have identical UUID's. To restore a backup you simply copy/extract the files to your desired location, add (add, not new) VM to OracleBox and restore the latest snapshot. To reduce downtime, a snapshot is created and the VM is restarted (if it was running in the first place).
![virtualbox snapshot virtualbox snapshot](https://articles-images.sftcdn.net/wp-content/uploads/sites/3/2009/09/virtualbox-snapshots-01.png)
At any point in the future you can restore the VM to this state no matter how much the VM has changed since the snapshot was taken. In order to succesfully create a backup, the VM needs to be in a stable (not changing) state. VirtualBox snapshots are a powerful and easy to use feature that allows you to save a VM in it’s current state for use at a later time.