Hi everyone!
I am using Esxi 6.7 on one HP server with the image "HPE Customized Image ESXi 6.7.0 Update 1 version 670.U1.10.3.5 released on October 2018 and based on ESXi 6.7.0 Update 1 Vmkernel Release Build 10302608". I am runnig two VM with Windows 2016 Server:
VM 1) ControladorDominio: has two disks "thin provisioned". The first one is 300 GB for the SO and 1,2 TB for data.
VM 2) Contabilidad: only one disk "thin provisioned" with 300 GB.
I am using Iperius Backup to backup both VMs with CBT option and all was working perfectly. The backups only took the space used currently: for example, the VM's disk of 1,2 TB only took 100 GB, which is the real space used. The same for the 300 GB disk: only 40 GB used and so was the backup's size.
One day and suddenly, the backups for the VM ControladorDominio take the full size: 1,2 TB + 300 GB = 1.5 TB aprox. But the real size inside the VM has not changed and is 100 GB in one disk and 40 GB in the other. I thought it could be a problem of Iperius Backup. But when I go to the Esxi web client, I see that the datastore has increased from 180 GB to 1,58 TB.
In this capture you can see the free space of the C and E drives. The used space is 1.47 TB when it should be 122 GB aprox.
The VM Contabilidad still is ok (49,87 used space)
Here you can check that hard drives are thin provisioned:
This is a real problem, because the hard disk we use to backup is 1TB capacity and the datastore has only 233 GB free.
What is the problem? Why did this happen to ControladorDominio? And the most important, can I free the unused space as it was before?
Thank you!