DPM 2012 R2
Server 2012 R2 and Server 2012 (R1). Both CSV volumes and Hyper-V hosts with non clustered volumes.
ISCSI Attached Storage. (Nimble SAN)
Every time a VM backup is made this error message occurs:
"'SERVERNAME' failed to perform the operation. The virtual machine is not in a valid state to perform the operation. (Virtual machine ID "GUID")"
The backup seems to finish fine most of the time, but it also seems to be causing some VM's to be in a hung/frozen state when this happens.