We have a machine with 3 volumes 2 of them are over 1TB of size. We keep getting There is not enough room in the Vcenter/ESX(i)host in the backup process. What can be the issue?
Are you close to maxing out your repository? On my DR server I calculated too closely and ultimately had to build a larger array. In other words 1 TB of backup will not fit on 1-1.1TB of space. You need like 1.2-1.3TB.