VMware and Backup Exec 2012

I am currently running Backup Exec 2012 in a Virtual inveronment, I need expert opinion on my setup environment. My server (Hardware) is NEC Express5800 series, i installed VMware Esx Version 5 on it then created a vertual machine and then installed win server 2008 R2 and in this server i have my Backup Exec 2012. 

 It this the best inveronment to use backup exec 2012 or should i install backup Exec directly on the hardware.