How to add NTFS partition on remote server to VMWare ESXi 5.1

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http://serverfault.com – I have ESXi 5.1 running on a standalone box. On another server, I have Windows 2008 R2 installed and it has a 1 TB partition free. Both are on the same network. I am a complete noob to VMWare and I'd like to know the easiest way to use that 1 TB partition as a datastore/available resource on my ESXi server. Will I have to convert the entire Windows 2008 R2 server using VMWare converter? If so, what will that do to my Windows server? Will it still run normally with Windows? (HowTos)