i just learn that when you virtualize a MS Exchange you must use a block protocol. Even if ESX present NFS from FAS as a block device, it is not supported.
We have been working with ESX, FAS and NFS for years with no problem, even with many exchange servers on it !!
I read many links from there and other forum and difficult to know what to do.
We now have a brand new strech metrocluster (2 fas8020 and 2 DS2246), and before having it under production i'm asking myself if i should use it with NFS (which is the prefered method for ESX/FAS) or with iSCSI (which is best practices for exchange).