With this we also implemented Symantec System Recovery 2013.
Issue I was experiencing is that my backups kept failing !! I kept getting an error and the company was about a week behind on backups. As you all know this is very concerning.
Here is what I did to resolve the error below. I hope this helps others out so that your client's backups does not fall behind.
Error E4F3000E: Snapshot failure while using Volume Shadow Copy Service
Right click one of your drives in Computer and select Properties
Select the Shadow copies tab
Now select every drive you have and click Settings.
Make sure you select the "No limit" maximum size for all drives.
Make sure that ALL the drives has the No Limit maximum size selected !!
Now go back to your System Recovery and run your backup again. Things should run smoothly now :)