I picked this one up from Chris Wolf’s blog last week. NPIV enabled fibre-channel adapters are ones that can present a WWN to the Virtual Machine. Primarily, this offers greater security when using features like RDMs – not only does the ESX host have to have a valid WWN, so does the VM. Support for this was added in Vi3.5, and you will find the NPIV configuration on the “Options” tab of a VM when you edit it settings. Oh, I should say I’m talking VMware BTW – after all there are other virtualization vendors you could be using (half supresses a snigger). Any Chris is actually flagging up the works of two guys William Lam and Tuan Duong who have developed scripts which offer an easy way to collect a list of all virtual ports (WWNs/WWPNs) in a given ESX cluster. Read more on the blog:

http://www.chriswolf.com/?p=199

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