Quoting from the NetApp official announcement:

StoreVault, a NetApp division, today announced that its StoreVault S500 has been certified to work with VMware Infrastructure 3.

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Pricing is available directly from StoreVault VARs.

StoreVault S500 acts as NAS or SAN device, supporting NFS, CIFS, FC (through QLogic HBAs) and iSCSI.