NFS to ISCSI solution

I have a very nice three host VMware system paired up with an HP 3par SAN. I have several VM's that run and performance is great. I specifically have two linux mail servers that need to share Maildir's on an NFS mount. I currently have those two servers connected to a Netapp that is aging and running out of space. So I'm asking some solutions about what would be best to utilize the space on my 3par, but present that volume as NFS to the two mail servers. I could spin up a Linux box and mount it directly to a volume on the 3par and share it out via NFS, but I will lose those lovely Netapp snapshots that are accessible right from the directory path. Any ideas on how I could do that and keep some kind of snapshot solution in place?