I'm trying to set up an NFS share on a server 2008 machine, that can be accessed from and ESXi server. However, when asked to provide a list of groups/accounts, the only two options I am given are AD Intergration, and a Username Mapping Server, neither of which I have.
A guide I was looking at used the /etc/passwd and /etc/group files, with Windows Services for Unix 3.5, but this isn't compatible with Windows Server 2008 64bit. Is it possible to do this Windows Server 2008, using just the two files, or will I have to use a third party NFS server?
They removed that feature in w2008 http://technet.microsoft.com/en-us/library/cc753302.aspx
So you would need a w2003 server.
I haven't tried it in 2008, but the article implies you can use local accounts - if you select the AD option, does it proceed without a domain?
I may be reading into this too much, but it sounds like you are wanting to run VMs from an NFS share on a Windows 2008 server that has a larger amount of storage than your ESXi server does? I'd recommend against it for production.
You could always fire up Cygwin and run an NFS server on 2008!
http://www.csparks.com/CygwinNFS/index.xhtml
Have fun! Good luck!