Re: vCenter upgrade 4.1 U3 to 5.1

Hi,

Welcome to VMware Community.

You can refer this doc for best practise

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2021193

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2021202

Note : I would go with use existing database option since in future we can use this setting as multi site. Also go with inidivial install of all the component of VMware vCenter server

Regards

Mohammed