hello community !
i browsed many topics about snapshots and learned a lot about disk requirements when deleteting or consolidating many snapshots of a VM.
but nobody says clearly what's happens when we have to delete 1 unique snapshot (or the last one).
in my case, snapshots were activated on a VM, 2 months ago. this vm has a 16gb system disc and a 85Gb data disk.
each snapshot are respectively 4gb for system, and 25Gb for data. and i have only 9Gb disk space left on the host machine.
how much disk space do i need to delete these snapshots ? 25gb ? 85 ? more ? or none ?
thanks, i am affraid to perform something wrong, as it is a production machine.
ps : it a linux Centos host. and a windows 2003 guest machine.