Reset Provisioned Disk Size in VMWARE
Posted on 2011-09-27
I know: never touch anything you don't know anything about. But I did, and now I have a problem to solve.
I don't know anything about VMWARE. Someone installed VMWARE ESXI 4.01 on our server. We have two virtual machines.
I was looking around in the settings of one of the servers and increased the provisioning size of one the virtual hard disks from 99.9 GB to 150 GB. I clicked Ok. VMWARE accepted the change. We use thin provisioning.
So far, no problem. When I look in de Windows SBS 2011 OS running in that machine nothing has changed. The size of the disk is still 99.9 GB, but our backup program (Arcserve D2D r15) doesn't wan't to start any backup jobs anymore. It stops the task saying 'Can't write to virtual disk. The system cannot find the file specified'.
I suppose I can fix my problem by resetting the value of the provisioned size, but VmWare doesn't allow me to decrease the value. Or perhaps I need to something to make Windows aware of the changes. Or am I seeing this completely wrong???