HP Data Protector 7.0 and VSphere 5.1

Hello,

I have just set up a Windows 2008 r2 guest on a ESXi 5.1 host. Backups on the guest are going VERY slow (About 5 hours to backup 50 G). I only installed the Data Protector agent on the guest. This is my first ESXi backup and I am not sure I did it right. Is there anything you have to do with VCenter or Datacenter?

Thanks

Bob