Re: vCenter 5.1 - memory usage after upgrade to 5.1

Hi,

If vCenter Server, vCenter Single Sign-On, and vCenter Inventory Service are installed on the same host machine (as with vCenter Simple Install), 10 GB of RAM are required.

Please refer this kb

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

Regards

Mohammed