Hyper- V VMs backup using Backup using Child Partitions Snapshots and Backup using Saved State through DPM 2012 R2

Hi,

I have installed DPM Server 2012 R2 on Server 2008 R2 Enterprise x64 bit OS and uses BAckup on Disk.

MY All  hyper-V Machines are also hosted on  Server 2008 R2 Enterprise x64 bit  hyper-V Host, Some Virtual Machiness are of server 2008 R2 and some of Server 2012 R2..

While I am creating the Protection Group for taking the Backup of Virtual Machines  I am getting the Description for Server 2008 R2 VM as Backup using Child Partitions Snapshots   and the description for Server 2012 R2 as Backup using Saved State..

hence i am looking for the differences between two uses terms of Hyper-V VMs Backup  as Backup using Child Partitions Snapshots  and Backup using Saved State here. also how can i solve the description Backup using Saved State

Shailendra Dev