I havent delt with raid volume so much with esx/i I deal with LUNS which I format as a whole vmfs3 volume, but I couldnt see why you couldnt use fdisk to create and setup the partion and vmkfstools to format it, least worth a try.
sure someone with more skills than myself can confirm
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Blog: http://virtualiseme.net.au
VCDX #201
Author of Mastering vRealize Operations Manager
