Sorry to sound like a newb but I am running VSphere 4.1 with 5 ESX node cluster. Up to this point when I create a new vm that requires multiple disks (SQL, Custom Apps, etc) I have done so by simply adding a disk through VSphere. The question is should I instead be installing Microsoft ISCSI initiator on the VM and creating LUNS for the addtional drives? Unfortunately I would have to make the connection to ISCSI over the same connections ESX uses to the NFS mount so I was not sure there would be any benefit since I can't separate the traffic. Thanks for any help.
The approach we took was to present LUN's directly to the ESX hosts then add them to VM's as RDM's (Raw Device Mappings) within VSphere, you do however need to use a VMDK as a RDM placeholder if you want to v-motion etc. This is fully supported from NetApp and you can use this method with all Snap Manager products, SMSQL, SMSP, SMVI, SME etc.