Backup vCenter VM

Hi all,

I saw this KB to backup vCenter.

Backing up and restoring vCenter Server 4.x and 5.0

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1023985

Can I just backup the whole vCenter VM?

I'm thinking of using standalone VMware converter to do that.

Any objection from using this method? Any better way?

I'm on ESXi & vCenter 4.1

Thank you.
Fajar.