ESX Hosts can not be managed by two VC Servers at the same time - the key thing to make sure it is replicated to the DR site is the VC database because all information about your environment is stored in the VC database - sp as long as the database is replicated to the DR site there are a couple of options - one is to have a copy of the VM at the DR site and if something happens to your primary site bring up the copy and as long as it has access to the database you will be able connect to your VC server -
I think the more complete solution would be to take a look at VMware SRM - this will not only provide for a VC Server in the DR site bt also will allow you to protect the ESX servers in the Primary site so if you primary site goes down yor ESX sevrers and their hosted virtual machines will be available -
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