Backing up a virtual machine (VM) with Changed Block Tracking (CBT) enabled fails after upgrading to or installing VMWare ESXI 6.0. You might encounter the following:
Databases running inside a VM can develop inconsistences
Powering on the VM can fail
Expanding the size of the virtual disk can fail
Taking VM quiesced snapshots can fail
SQL Server does not contribute to this problem but it can become impacted by the misbehavior shown by VMWare vSphere Storage APIs – Data Protection. Your database or the backup images could become physically inconsistent and have severe impacts to data availability.
To avoid inconsistencies caused by this problem, if you are using VMWare ESXi 6.0 move immediately to patch release ESXi600-201505001 (2116125) or later. More information on the patch can be found
. An upgradable version should be able to be found