If you don't mine me asking what is causing you to change you SCSI mode? have you check to make sure the mode you are changing to is support by your SAN?
Senior Systems Engineer
ASKER
comp,
THe reason is that the VM was provisioned wrongly :-) a simple mouse click on the "physical" mode prevents the Snapshot of C: drive and also DRS and VMotion.
in this case I cannot make any backup because the backup software failed to take snapshot of this VM (File Server).