A Snapshot is a logical copy of the state of a VM including the data disks at a particular point in time.
Snapshots are used to roll back VMs to a good state.
Whitesky recommends that before any big update or change on a VM the customer takes a snapshot of his VM.
Snapshots are not backups!
Users can take their own snapshots, and see them in the userportal.
However, Whitesky also takes snapshots as a safety measure
Those can not been seen by the user and only be restored by Whitesky admin on request of a user.
The standard schedule is :
we take snapshots every hour for the first 48 hours of a running vm, 2 snapshots on the 3rd day ,
1 snapshot per day for the 5 days after that and finally 1 snapshot a week after that.
so if you have a VM running for 50 days we have the following snapshots :
48 snapshots of the first 48 hours,
2 snapshots of the 3rd day,
1 snapshot a day from day 4 to 9,
and finally 1 snapshot for the time between 9-16 days, 16-23 days, 23-30days, 30-37 days, 37-44 days, 44-51 days and 51-58 days