Power On and Live Migrate features are failing after change block tracking changes introduced with ESXi 6.0 Express Patch 6 (build 3825889). After this updateVM snapshot cannot be created without vmname-ctk.vmdk files, which DP performs in both operations. In session reports following might be seen:
[Major] From: RSM@cellmanager "" Time: 8/24/2016 11:06:09 PM
[62:1021] Bar restore session was started but no client connected
in 600 seconds.
Aborting session!
And from corresponding debugs:
[ 20] [WaitForTask] Didn't receive 'success'. Received: An error occurred while taking a snapshot: Could not open or create change tracking file.
HPE is working with VMware to identify more details about that change in behavior and future Data Protector patch release.